Lap trinh C BT
Chương trình 1:tính điểm trung binh cuae n môn nhập từ bàn phím
#include <stdio.h>
#include <conio.h>
main()
{
clrscr();
int so_mon,diem,tong,i;
float diemtb;
gotoxy (2,5);
printf("hay cho biet co bao nhieu mon hoc can tinh diem trung binh:
");
scanf("%d",&so_mon);
fflush (stdin);
//kiem tra dien kin so_mon>0 va so_mon khong phai la ky tu
if (so_mon<0)
{
do
{printf("moi nhap lai so mon hoc
");
scanf("%d",&so_mon);
fflush(stdin);
}
while (so_mon<0);
}
printf("hay nhap vao so diem tung mon
");
tong=0;
//Nhap diem cho tung mon
for(i=1;i<=so_mon;i++)
{
printf("Mon%d=
",i);
scanf("%d",&diem);
fflush(stdin);
//kiem tra dieu kien diem>0 va diem khong phai la ky tu
if ((diem>10)||(diem<0))
do
{ printf("moi ban nhap lai vi diem phai nho hon 10 va lon hon 0 va khong phai la ky tu
");
printf("Mon%d=
",i);
scanf("%d",&diem);
fflush(stdin);
}
while ((diem>10)||(diem<0));
tong+=diem;
}
diemtb=tong/so_mon;
printf("diem trung binh la:%.2f",diemtb);
getch();
return 0;
}
Bài 2 :đảo vị trí số nguyên n nhập từ bàn phím
include <stdio.h>
#include <math.h>
#include <conio.h>
main()
{
float so_nguyen,so;
float a,b,c;
double so_nguyen_lam_tron,x,n;
int z,y=1,so_chu_so=1;
clrscr();
gotoxy(10,5);
printf("******************************************************************
");
gotoxy(10,6);
printf("* *
");
gotoxy(10,7);
printf("* *
");
gotoxy(10,8);
printf("* *
");
gotoxy(10,9);
printf("******************************************************************
");
gotoxy(20,7);
printf("Day la chuong trinh dao vi tri 1 so nguyen");
gotoxy(15,10);
printf("Moi ban nhap vao 1 so nguyenla:");
scanf("%f",&so_nguyen);
so_nguyen_lam_tron=ceil(so_nguyen);
n=(so_nguyen-so_nguyen_lam_tron);
//kiem tra xem co phai la 1 so nguyen hay khong
if ((n>0)||(n<0))
do { printf("So ban vua nhap khong phai la so nguyen
");
printf("Moi ban nhap lai:");
scanf("%f",&so_nguyen);
so_nguyen_lam_tron=ceil(so_nguyen);
n=abs(so_nguyen-so_nguyen_lam_tron);
}
while ((n>0)||(n<0));
//xem n co bao nhieu chu s
do { x=floor(so_nguyen_lam_tron)/pow(10,y);
x=floor(x);
y++;
so_chu_so++;
}
while (x>1);
so=so_nguyen;
//thuat toan dao so
do { b=1;
a=fmod(so_nguyen,10);
so_nguyen=(so_nguyen-a)/10;
c+=(a*pow(10,so_chu_so-1));
so_chu_so--;
b++;
}
while (so_chu_so>0);
printf("Dao cua so %.0f la so: %.0f",so,c);
getch();
return 0;
}
Bài 3:viết chương trình viết bang cửu chương gồm n cột và m hàng nè
#include <stdio.h>
#include <conio.h>
main()
{
clrscr();
gotoxy(5,2);
printf("Day la chuong trinh viet bang cuu chuong gom n cot va m hang
");
int x=7,y=10,z=9,k=10,o=9,l,a=1,i=1,colum,row,so_gach=6;
printf("So cot la:");
scanf("%d",&colum);
printf("So hang la:");
scanf("%d",&row);
for (int gach=1;gach<=((4*colum)+3);gach++)
{ gotoxy(so_gach,8);
so_gach++;
printf("-");
}
//viet ra dau I
for(int n=1;n<=(row+1);n++)
{
gotoxy(8,x);
x=x+2;
printf("I");
}
//viet ra tu 1 den m so hang cu bang cuu chuong
for (int hang=1;hang<=row;hang++)
{
gotoxy(6,z);
z=z+2;
printf("%d",hang);
}
//viet ra tu 1 den n so cot cua bang cuu chuong
for (int cot=1;cot<=colum;cot++)
{
gotoxy(y,7);
y=y+4;
printf("%d",cot);
}
//phan tinh toan trong bang cuu chuong
for (;i<=colum;i++)
{ gotoxy(k,o);
k=k+4;
l=a*i;
printf("%d",l);
if ((i>=colum)&&(o<=((2*row)+6)))
{o=o+2;
k=10;
i=0;
a++;
}
}
getch();
return 0;
}
bài 4(theo yêu cầu của Haim làm mất 4 ngày không học bài đó)
viết ra hoán vị của các số (các chữ số khác nhau từng đôi một)
#include <stdio.h>
#include <conio.h>
#include <math.h>
main()
{
double so_can_hoan_vi,so,phu;
double a,c;
double so_lam_tron,x,n,h;
long tu_so=1,den_so=9,nho=9,qwe;
int z,y=1,so_chu_so=0,t=1,e,s,k=0,qwr,hx=0,tt=1,aa=0;
int mang[10];
double mang2[10];
clrscr();
printf("day la chuong trinh hoan vi so co n chu so
");
printf(" (khac nhau tung doi 1)" );
printf("
moi nhap so can hoan vi:");
scanf("%lf:",&so_can_hoan_vi);
so_lam_tron=ceil(so_can_hoan_vi);
n=so_can_hoan_vi-so_lam_tron;
//phan kiem tra so nhap vao
//kiem tra xem co phai la 1 so nguyen hay khong
do
{ //1
phu=so_can_hoan_vi;
if (n!=0)
do{ printf("Ban vua nhap khong dung
"); //2
printf("Moi ban nhap lai:");
scanf("%lf",&so_can_hoan_vi);
so_lam_tron=floor(so_can_hoan_vi);
n=so_can_hoan_vi-so_lam_tron;
} //.1
while (n!=0);
phu=so_can_hoan_vi;
//xem n co bao nhieu chu so
do { //3
x=floor(so_lam_tron)/pow(10,y);
y++;
so_chu_so++;
} //.2
while (x>1);
s=so_chu_so;
for (int k=0;k<s;k++)
{ //4
a=fmod(so_can_hoan_vi,10);
mang[k]=a;
so_can_hoan_vi=(so_can_hoan_vi-a)/10;
}
if (s==1) {printf("so %.0lf khong co hoan vi
",phu);
e=1;
n=1;
y=1;
so_chu_so=0;
t=1;} //.3
//kiem tra xem cac chu so cua so nhap vao co giong nhau hay khong
for(int i=0;i<s-1;i++)
{
for(int d=t;d<s;d++)
{
if (mang[d]==mang[i])
{e=1;
n=1;
i=s-1;
y=1;
so_chu_so=0;
t=1;
break;}
if (d==(s-1))
{t++;
e=0;
break;}
} //.6
} //.7
} //.8
while (e!=0);
//phan chinh
printf("hoan vi la: \t");
for(int o=1;o<s;o++)
tu_so=tu_so*10;
for(int p=1;p<s;p++)
den_so=((den_so*10)+nho);
//thuat toan
for( tu_so;tu_so<den_so;tu_so++)
{
qwe=tu_so;aa=0;tt=1; //9
for(int j=0;j<s;j++)
{ h=fmod(tu_so,10);
mang2[j]=h;
tu_so=(tu_so-h)/10;
}
//kiem tra xem cac cac chu so cu tu_so co giong nhau hay khong
for(int ii=0;ii<s-1;ii++)
{
for(int dd=tt;dd<s;dd++)
{
if (mang2[dd]==mang2[ii])
{aa=s;
ii=s-1;
tt=1;
tu_so=qwe;
break;}
if (dd==(s-1))
{tt++;
break;}
}
}
for(int ht=aa;ht<s;ht++)
{ for (int hm=0;hm<s;hm++)
{ if (mang2[ht]==mang[hm])
{ hx++;
tu_so=qwe;
break;
}
if (hm==s-1)
{ ht=s;
hx=0;
tu_so=qwe;
break;
}
}
}
if ((hx==s)&&(qwe!=phu)) {printf("%ld\t",qwe);tu_so=qwe;hx=0;}
}
textcolor(RED+BLINK);
printf("
******************************
");
printf(" *Copyright by Shin *
");
printf(" * class : 08I2 *
");
printf(" * School: CIT *
");
printf(" ******************************");
getch();
return 0;
}
Còn đây là bài tập cấu trúc 1 của tui ne
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
int dem=0;
//--------struct quan ly ten cac file da luu--------------
struct quanly
{
char tenfile[30];
struct quanly *next1;
};
//------------khai bao struct ngaythang---------------
struct ngaythang
{ char ngay;
char thang;
unsigned int nam;
};
//------------khai bao struc sinhvien---------------
struct sinhvien
{
char hoten[30];
struct ngaythang ngaysinh;
char diemtoan,diemly,diemhoa;
float diemtb;
struct sinhvien *next;
};
char *filename[]={" Khong Co File Luu ",
"file1.txt","file2.txt","file3.txt","file4.txt","file5.txt",
"file6.txt","file7.txt","file8.txt","file9.txt",};
struct sinhvien *last,*first,*sv,*fileluu;//khai bao bien toan cuc
//-------------------------ham tao Menu--------------------------------
void MENU(void)
{
void Mo1(void);
void Mo2(void);
void Mo3(void);
void Mo4(void);
void Mo41(char tenkiemtra[],int oktam1);
void Mo5(void);
void Mo6(void);
void nhap(void);//khai bao prototype
char *MENU[]=
{ "* Thiet Lap Danh Sach *",
"* Xem Danh Sach *",
"* Lua Chon *",
"* Tim Kiem *",
"* Thoat *",
};
char *DS[]=
{ "* Tao Danh Sach *",
"* Them vao danh sach *",
"* Xoa Danh Sach *",
"* Quay Lai *",
};
char *InDS[]={ "* In DS SV Co Diem TB>=5 *",
"* In SV Co Diem TB Thap Nhat *",
"* In SV Co Diem TB Cao Nhat *",
"* Quay Lai *",
};
char *TK[]={ "* Theo Ten *",
"* Theo Diem Toan *",
"* Theo Diem ly *",
"* Theo Diem Hoa *",
"* Quay Lai *",
};
flag1: //thiet lap nhan"flag1"
int k, ok=-1, fl=-1,oktam1=0;
char tenkiemtra[30];
char c;
textmode(C40);//Chon che do man hinh (screen mode)
textbackground(6);//Chon mau nen (background color)
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
clrscr();
textcolor(13);
cprintf("
CHUONG TRINH QUAN LY SINH VIEN ");
gotoxy(2,6);
cprintf("*****************MENU*****************
"); //Chon mau chu (text colo
for (int t=0;t<5;t++)
{
gotoxy(2,8+2*t);
cprintf("%s",MENU[t]);
};
gotoxy(2,18);
cprintf("**************************************");
//In ten nguoi thuc hien
gotoxy(20,20);cprintf("Doan Vuong Anh Tuan");
gotoxy(20,22);cprintf("Lop:08I2");
gotoxy(40,14);
while (ok!=5)
{
if (!(c=getch())) c=getch();
textbackground(BLUE);
textcolor(13);
gotoxy(2,8+2*ok);
if(ok!=-1)
cprintf("%s",MENU[ok]);
switch (c)
{
case '\120': ok=(ok+1)%5;break;//Neu an phim MUI TEN XUONG
case '\110': ok=(ok+4)%5;break;//Neu an phim MUI TEN LEN
case '\015': ok=5;break;//Neu an phim ENTER
};
textbackground(11);
textcolor(RED);
if(ok!=-1)
{ gotoxy(2,8+2*ok);
cprintf("%s",MENU[ok]);
}
if (ok==5)
{
textmode(C80);
clrscr();
textcolor(10);
clrscr();
switch (fl) // bat dau switch
{ //-Bat dau phan"thiet lap danh sach"cua MENU------
case 0://lua chon muc "Thiet lap"
{
flag2://thiet lap nha"flag2"
int i0,k0, ok0=-1, fl0=-1;
char c0;
textmode(C40);//Chon che do man hinh (screen mode)
textbackground(6);//Chon mau nen (background color)
clrscr();
//Tao cua so voi tham so: toado, chieu dai, rong
window(5,6,46,20);
textbackground(BLUE);
clrscr();
textcolor(13);//Chon mau chu (text color)
for (i0=0;i0<4;i0++)
{
gotoxy(2,4+2*i0);
cprintf("%s",DS[i0]);
};
while (ok0!=4) //while 1
{
if (!(c0=getch())) c0=getch();
textbackground(BLUE);
textcolor(13);
gotoxy(2,4+2*ok0);
if(ok0!=-1)
cprintf("%s",DS[ok0]);
switch (c0)
{//Neu an phim MUI TEN XUONG
case '\120': ok0=(ok0+1)%4;break;
//Neu an phim MUI TEN LEN
case '\110': ok0=(ok0+3)%4;break;
case '\015': ok0=4;break;//Neu an phim ENTER
};
textbackground(11);
textcolor(RED);
if(ok0!=-1)
{ gotoxy(2,4+2*ok0);
cprintf("%s",DS[ok0]);}
if (ok0==4)
{
textmode(C80);//man hinh 80 cot
textmode(64);//man hinh 50 dong
clrscr();
textcolor(10);
clrscr();
switch (fl0)
{
case 0:nhap();goto flag2;
case 1: Mo2();goto flag2;
case 2: Mo3();goto flag2;
case 3: ok0=4;fl0=4;break;
};
if(fl0==4)
{fl=ok; goto flag1;}
if(fl0!=4) goto flag2;
}
fl0=ok0;
}; //End of While1;
}//--Het muc "thiet lap danh sach" cua MENU--
case 1: Mo1();goto flag1;
case 2: //----lua chon muc "Lua Chon"--------
{
flag4://thiet lap nha"flag4"
int i2,k2, ok2=-1, fl2=-1;
char c2;
textmode(C40);//Chon che do man hinh (screen mode)
textbackground(6);//Chon mau nen (background color)
clrscr();
window(5,6,46,20);//Tao cua so
textbackground(BLUE);
clrscr();
textcolor(13);//Chon mau chu (text color)
for (i2=0;i2<4;i2++)
{
gotoxy(2,4+2*i2);
cprintf("%s",InDS[i2]);
};
while (ok2!=4) //while 2
{
if (!(c2=getch())) c2=getch();
textbackground(BLUE);
textcolor(13);
gotoxy(2,4+2*ok2);
if(ok2!=-1)
cprintf("%s",InDS[ok2]);
switch (c2)
{
case '\120': ok2=(ok2+1)%4;break; //Neu an phim MUI TEN XUONG
case '\110': ok2=(ok2+3)%4;break; //Neu an phim MUI TEN LEN
case '\015': ok2=4;break; //Neu an phim ENTER
};
textbackground(11);
textcolor(RED);
if(ok2!=-1)
{ gotoxy(2,4+2*ok2);
cprintf("%s",InDS[ok2]);}
if (ok2==4)
{
textmode(C80);//man hinh 80 cot
textmode(64);//man hinh 50 dong
clrscr();
textcolor(10);
clrscr();
switch (fl2)
{
case 0: Mo4();
goto flag4;
case 1: Mo5();
goto flag4;
case 2: Mo6();
goto flag4;
case 3: ok2=4;fl2=4;break;
};
if (fl2==4)
{ fl=ok; goto flag1;}
if (fl2!=4) goto flag4;
}
fl2=ok2;
}; //End of While2;
}
case 3:
{
flag5://thiet lap nhan"flag5"
int i3,k3, ok3=-1, fl3=-1;
char c3;
textmode(C40);//Chon che do man hinh (screen mode)
textbackground(6);//Chon mau nen (background color)
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
clrscr();
textcolor(13);//Chon mau chu (text color)
for (i3=0;i3<5;i3++)
{
gotoxy(2,4+2*i3);
cprintf("%s",TK[i3]);
};
while (ok3!=5) //while 3
{
if (!(c3=getch())) c3=getch();
textbackground(BLUE);
textcolor(13);
gotoxy(2,4+2*ok3);
if(ok3!=-1)
cprintf("%s",TK[ok3]);
oktam1=ok3;
switch (c3)
{
case '\120': ok3=(ok3+1)%5;break; //Neu an phim MUI TEN XUONG
case '\110': ok3=(ok3+4)%5;break; //Neu an phim MUI TEN LEN
case '\015': ok3=5;break; //Neu an phim ENTER
};
textbackground(11);
textcolor(RED);
if(ok3!=-1)
{ gotoxy(2,4+2*ok3);
cprintf("%s",TK[ok3]);}
if (ok3==5)
{
textmode(C80);//man hinh 80 cot
textmode(64);//man hinh 50 dong
clrscr();
textcolor(10);
clrscr();
switch (fl3)
{
case 0: Mo41(tenkiemtra,oktam1);
goto flag5;
case 1: Mo41(tenkiemtra,oktam1);
goto flag5;
case 2: Mo41(tenkiemtra,oktam1);
goto flag5;
case 3: Mo41(tenkiemtra,oktam1);
goto flag5;
case 4: ok3=5;fl3=5;break;
};
if (fl3==5)
{ fl=ok; goto flag1;}
if (fl3!=5) goto flag5;
}
fl3=ok3;
}; //End of While3;
}//----------het muc "tim kiem"---------------------
case 4: ok=5;fl=5;break;
};//ket thuc switch
if (fl!=5) goto flag1;
}
fl=ok;
}; //End of While;
}
//-----------------------Het ham MENU----------------------
//-------------Ham luu danh sach vao 1 file ------------------------------
void luu()
{
char ten[10];
FILE *thutep,*demten;
if(dem>=10) printf("het cho luu moi xoa bot 1file");
else
{
thutep=fopen(filename[dem+1],"r");
if(thutep==NULL) dem++;
fclose(thutep);
demten=fopen("demtep.txt","w");
fprintf(demten,"%d",dem);
fclose(demten);
thutep=fopen(filename[dem],"a+");
if(thutep==NULL)
printf("
ERROR Khong the luu file");
else
{
sv=first;
while(sv!=NULL)
{
fprintf(thutep,"
Ten:%s
",sv->hoten);
fprintf(thutep,"Sinh ngay:%d-%d-%d
",sv->ngaysinh.ngay,sv->ngaysinh.thang,sv->ngaysinh.nam);
fprintf(thutep,"diem toan:%d
diemly:%d
diem hoa:%d
",sv->diemtoan,sv->diemly,sv->diemhoa);
fprintf(thutep,"diemTb:%.2f
",sv->diemtb);
sv=sv->next;
}
}
}
fclose(thutep);
}//--------het ham luu------------
//--nhap vao thong tin cua Sinh vien khi chua biet so luong sv cu the-----
void nhap(void)
{
char ten[30],chon,luachon;
float tb,tong;
first=NULL;
flushall();
do
{
printf("Moi nhap ten sinh vien(nhan enter de ket thuc):");
if (ten[0]==NULL) break;//thoat vong lap khi nhan enter
else
{
sv=(struct sinhvien *)calloc(1,sizeof(struct sinhvien));
// cap phat 1 bien dong
strcpy(sv->hoten,ten);
printf("Sinh Ngay Thang Nam(vi du 6 6 1990):
");
scanf("%d%d%d",&sv->ngaysinh.ngay,&sv->ngaysinh.thang,&sv->ngaysinh.nam);
printf("Diem Toan Ly Hoa(vi du 6 6 6):
");
scanf("%d%d%d",&sv->diemtoan,&sv->diemly,&sv->diemhoa);
tong=(sv->diemtoan+sv->diemly+sv->diemhoa);
//chuyen kieu du lieu tu int sang float de tinh diem tb
tb=tong/3;
sv->diemtb=tb;
while(getchar()!= '
'); //xoa bo nho dem
sv->next=NULL;
if (first!=NULL) last->next=sv;
else first=sv;
last=sv;
}
}
while(1); //vong lap vo han
do
{
flushall();
printf("
Ban co muon luu hay khong(C/K):");
scanf("%c",&chon);
luachon=toupper(chon);
}
while(luachon!='C'&&luachon!='K');
switch(luachon)
{ case 'C':
if(dem<=10)
{
luu();
printf(" Da luu vao file%d.txt",dem);
}
else
printf("File day(hay xoa bot 1 file de luu them)");
getch();
break;
case 'K': printf(" Ban da khong luu");break;
}
}//----------het ham nhap-------------------
//---------Ham Mo Danh Sach Da co de xem---------------------
void Mo1(void)
{
FILE *mo;
char c,t,e;
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf("%s",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if (!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break;
case '\110': ok10=(ok10+dem)%(dem+1);break;
case '\015': ok10=dem+1;break;
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
switch (thu)
{
case 0:mo=fopen(filename[oktam+1],"r");
if(mo==NULL) printf("EROOR Moi thu lai");
else{
rewind(mo);
clrscr();
do
{
putchar(c=getc(mo));
}
while(c!=-1);}
fclose(mo);
getch(); break;
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
fclose(mo);
}//------------ket thuc ham Mo1-----------------
//----Ham Mo de them vao Danh Sach Da co---------------------
void Mo2(void)
{
FILE *mo,*thutep;
char c,t,e,ten[30];
int tong,chon,luachon;
float tb;
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf(" %s ",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if(!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break;
case '\110': ok10=(ok10+dem)%(dem+1);break;
case '\015': ok10=dem+1;break;
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
switch (thu)
{
case 0:
{
mo=fopen(filename[oktam+1],"a");
if(mo==NULL) printf("EROOR Moi thu lai");
else
{
printf("Ban da chon them vao Danh sach nay.
Moi nhap so lieu
");
do
{ flushall();
printf("Moi nhap ten sinh vien(nhan enter de ket thuc):");
if (ten[0]==NULL) break;//thoat vong lap khi nhan enter
else
{
// cap phat 1 bien dong
sv=(struct sinhvien *)calloc(1,sizeof(struct sinhvien));
strcpy(sv->hoten,ten);
printf("Sinh Ngay Thang Nam(vi du 6 6 1990):
");
scanf("%d%d%d",&sv->ngaysinh.ngay,&sv->ngaysinh.thang,&sv->ngaysinh.nam);
printf("Diem Toan Ly Hoa(vi du 6 6 6):
");
scanf("%d%d%d",&sv->diemtoan,&sv->diemly,&sv->diemhoa);
tong=(sv->diemtoan+sv->diemly+sv->diemhoa);
tb=tong/3;
sv->diemtb=tb;
while(getchar()!= '
'); //xoa bo nho dem
sv->next=NULL;
if (first!=NULL) last->next=sv;
else first=sv;
last=sv;
};
}
while(1); //vong lap vo han
do
{ flushall();
printf("
Ban co muon luu hay khong(C/K):");
scanf("%c",&chon);
luachon=toupper(chon);
}
while(luachon!='C'&&luachon!='K');
switch(luachon)
{ case 'C':
flushall();
thutep=fopen(filename[oktam+1],"a");
sv=first;
while(sv!=NULL)
{
fprintf(thutep,"
Ten:%s
",sv->hoten);
fprintf(thutep,"Sinh ngay:%d-%d-%d
",sv->ngaysinh.ngay,sv->ngaysinh.thang,sv->ngaysinh.nam);
fprintf(thutep,"diem toan:%d
diemly:%d
diem hoa:%d
",sv->diemtoan,sv->diemly,sv->diemhoa);
fprintf(thutep,"diemTb:%.2f
",sv->diemtb);
sv=sv->next;
};
fclose(thutep);
printf(" Da luu them vao file nay");
getch();
break;
case 'K': printf(" Ban da khong luu");getch;break;
}
}
}//het lua chon case0
fclose(mo); break;
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
fclose(mo);
}//------------ket thuc ham Mo2-----------------
//--------------------Ham Mo Danh sach de xoa---------------------
void Mo3(void)
{
FILE *mo,*mo1,*mo2;
char c,t,e,n,chon,luachon;
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf("%s",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if (!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break;
case '\110': ok10=(ok10+dem)%(dem+1);break;
case '\015': ok10=dem+1;break;
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
switch (thu)
{
case 0:
{ flushall();
printf("
Ban co chac la muon xoa hay khong (C/K):");
scanf("%c",&chon);
luachon=toupper(chon);
}
while(luachon!='C'&&luachon!='K');
switch(luachon)
{ case 'C': remove(filename[oktam+1]);
if(dem>2&&oktam+1!=dem)
{
for(int m=oktam;m<dem-1;m++)
{ printf("
Du lieu trong %s da chuyen sang %s",filename[m+2],filename[m+1]);
mo1=fopen(filename[m+1],"w");
mo2=fopen(filename[m+2],"r");
do{
n=getc(mo2);
fprintf(mo1,"%c",n);
}
while(n!=-1);
fclose(mo1);
fclose(mo2);
remove(filename[m+2]);
};
}
printf("da xoa");
dem--;
mo=fopen("demtep.txt","w");
fprintf(mo,"%d",dem);
fclose(mo);
getch();
break;
case 'K': printf(" Ban da khong luu");break;
}
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
}
//------------ket thuc ham Mo3-----------------
//--------------------Ham Mo Danh Sach De in diem TB>=5----------------------
void Mo4(void)
{
void timkiem4(FILE *fg,char dieukien[30]);
FILE *mo;
char c,t,e;
char tenkiemtra[30];
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf("%s",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if (!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break;
case '\110': ok10=(ok10+dem)%(dem+1);break;
case '\015': ok10=dem+1;break;
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
if(oktam!=dem) strcpy(tenkiemtra,"diemTb:5.00");
switch (thu)
{
case 0:mo=fopen(filename[oktam+1],"r");
if(mo==NULL) printf("EROOR Moi thu lai");
timkiem4(mo,tenkiemtra);
break;
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
fclose(mo);
}//------------ket thuc ham Mo4-----------------
//--------------------Ham Mo Danh Sach De tim kiem theo diem,ten,diemtaon,diemly,diemhoa;----------------------
void Mo41(char tenkiemtra[],int oktam1)
{
void timkiem(FILE *fg,char dieuken[],char tentam[]);
FILE *mo;
char c,t,e,tentam[20];
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf("%s",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if (!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break; //Neu an phim MUI TEN XUONG
case '\110': ok10=(ok10+dem)%(dem+1);break; //Neu an phim MUI TEN LEN
case '\015': ok10=dem+1;break; //Neu an phim ENTER
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
switch (thu)
{
case 0:
if(oktam1==0)
{
printf("Moi nhap ten can tim:");
gets(tentam);
strcpy(tenkiemtra,"Ten:");
};
if(oktam1==1)
{
printf("Moi nhap diem toan:");
gets(tentam);
strcpy(tenkiemtra,"diem toan:");
}
if(oktam1==2)
{
printf("Moi nhap diem ly:");
gets(tentam);
strcpy(tenkiemtra,"diemly:");
}
if(oktam1==3)
{
printf("Moi nhap diem hoa:");
gets(tentam);
strcpy(tenkiemtra,"diem hoa:");
}
mo=fopen(filename[oktam+1],"r");
if(mo==NULL) printf("EROOR Moi thu lai");
timkiem(mo,tenkiemtra,tentam);
break;
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
fclose(mo);
}//------------ket thuc ham Mo41-----------------
//--------------------Ham Mo Danh Sach Da de in sv co diem thap nhat---------------------
void Mo5(void)
{
void timkiem1(FILE *fg);
FILE *mo;
char c,t,e;
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf("%s",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if (!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break; //Neu an phim MUI TEN XUONG
case '\110': ok10=(ok10+dem)%(dem+1);break; //Neu an phim MUI TEN LEN
case '\015': ok10=dem+1;break; //Neu an phim ENTER
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
switch (thu)
{
case 0:mo=fopen(filename[oktam+1],"r");
if(mo==NULL) printf("EROOR Moi thu lai");
timkiem1(mo);
break;
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
fclose(mo);
}//------------ket thuc ham Mo5-----------------
//--------------------Ham Mo Danh Sach Da de in sv co diem cao nhat---------------------
void Mo6(void)
{
void timkiem2(FILE *fg);
FILE *mo;
char c,t,e;
flag10: int k,l=0,thu,ok10=-1,fl10=-1,oktam=0;
if(dem==0)
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
gotoxy(2,4);
cprintf("%s",filename[0]);
gotoxy(2,6);
cprintf(" Quay Lai ");
textbackground(11);
textcolor(RED);
gotoxy(2,6);
cprintf(" Quay Lai ");
while(1)
{
if (!(c=getch())) c=getch();
switch (c)
{
case '\015': k=1;break;//Neu an phim ENTER
};
if(k==1) break;
}
}
else
{
textmode(C40);
textbackground(BLUE);
clrscr();
window(5,6,46,20);//Tao cua so voi tham so: toado, chieu dai, rong
textbackground(BLUE);
textcolor(13);
for(l=1;l<=dem;l++)
{
gotoxy(2,2*l);
cprintf(" %s ",filename[l]);
}
gotoxy(2,2+2*l-2);
cprintf(" Quay Lai ");
while (ok10!=dem+1)
{
if (!(e=getch())) e=getch();
if(ok10!=-1&&ok10!=dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10!=-1&&ok10==dem)
{
textbackground(BLUE);
textcolor(13);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
oktam=ok10;
switch (e)
{
case '\120': ok10=(ok10+1)%(dem+1);break; //Neu an phim MUI TEN XUONG
case '\110': ok10=(ok10+dem)%(dem+1);break; //Neu an phim MUI TEN LEN
case '\015': ok10=dem+1;break; //Neu an phim ENTER
}
if(ok10!=dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" %s ",filename[ok10+1]);
}
if(ok10==dem&&ok10!=-1&&ok10!=dem+1)
{
textbackground(11);
textcolor(RED);
gotoxy(2,2+2*ok10);
cprintf(" Quay Lai ");
}
if (ok10==dem+1)
{
textmode(C80);
textmode(64);
clrscr();
textcolor(10);
clrscr();
if(fl10!=dem) thu=0;
else thu=1;
switch (thu)
{
case 0:mo=fopen(filename[oktam+1],"r");
if(mo==NULL) printf("EROOR Moi thu lai");
timkiem2(mo);
break;
case 1: ok10=dem+1;fl10=dem+1;break;
};
if (fl10!=dem+1) goto flag10;
if(fl10==dem+1) break;
}
fl10=ok10;
}
}
fclose(mo);
}//------------ket thuc ham Mo6-----------------
//ham tim kiem theo dieu kien TB>=5,ten,diem taon,diem ly,diem hao----------
void timkiem(FILE *fp,char dieukien[30],char tentam[20])
{
struct thongtin
{
char tenf[30];
char ngay[30];
char toan[30],ly[30],hoa[30],tb[30];
char rong[30];
}luutru[30];
int i,n,z=0;
clrscr();
//doc het
i=0;
fflush(stdin);
rewind(fp);
fgets(luutru[i].rong,2,fp);
while(!feof(fp))
{ flushall();
fgets(luutru[i].tenf,30,fp);
fgets(luutru[i].ngay,30,fp);
fgets(luutru[i].toan,30,fp);
fgets(luutru[i].ly,30,fp);
fgets(luutru[i].hoa,30,fp);
fgets(luutru[i].tb,30,fp);
fgets(luutru[i].rong,2,fp);
printf("%s",dieukien);
printf("%s",tentam);
i++;
}
n=i;
clrscr();
fclose(fp);
flushall();
for(i=0;i<n;i++)
{
flushall();
if(((strstr(luutru[i].tenf,dieukien)!=NULL)&&(strstr(luutru[i].tenf,tentam)!=NULL))||((strstr(luutru[i].toan,dieukien)!=NULL)&&(strstr(luutru[i].toan,tentam)!=NULL))||((strstr(luutru[i].ly,dieukien)!=NULL)&&(strstr(luutru[i].ly,tentam)!=NULL))||((strstr(luutru[i].hoa,dieukien)!=NULL)&&(strstr(luutru[i].hoa,tentam)!=NULL)))
{
flushall();z++;
printf("%s",luutru[i].tenf);
printf("%s",luutru[i].ngay);
printf("%s",luutru[i].toan);
printf("%s",luutru[i].ly);
printf("%s",luutru[i].hoa);
printf("%s",luutru[i].tb);
}
fflush(stdin);
};
if(z==0) printf("Khong co Ai thoa man yeu cau");
getch();
}
//-------------het ham---------------
//--------------ham tim kiem trung binh thap nhat--------
void timkiem1(FILE *fp)
{
struct thongtin
{
char tenf[30];
char ngay[30];
char toan[30],ly[30],hoa[30],tb[30];
char rong[30];
}luutru[30];
char min[30];
int i,n,h;
clrscr();
//doc het
i=0;
fflush(stdin);
rewind(fp);
fgets(luutru[i].rong,2,fp);
while(!feof(fp))
{ flushall();
fgets(luutru[i].tenf,31,fp);
fgets(luutru[i].ngay,31,fp);
fgets(luutru[i].toan,31,fp);
fgets(luutru[i].ly,31,fp);
fgets(luutru[i].hoa,31,fp);
fgets(luutru[i].tb,31,fp);
fgets(luutru[i].rong,2,fp);
i++;
}
n=i;
clrscr();
fclose(fp);
strcpy(min,luutru[0].tb);
h=0;
for(i=1;i<n;i++)
{
if(strcmpi(luutru[i].tb,min)<0)
h=i;
}
printf("nguoi co diem TB thap nhat la:
");
printf("%s",luutru[h].tenf);
printf("%s",luutru[h].ngay);
printf("%s",luutru[h].toan);
printf("%s",luutru[h].ly);
printf("%s",luutru[h].hoa);
printf("%s",luutru[h].tb);
getch();
}
//-------------het ham---------------
//ham tim kiem theo dieu kien TB>=5----------
void timkiem4(FILE *fp,char dieukien[30])
{
struct thongtin
{
char tenf[30];
char ngay[30];
char toan[30],ly[30],hoa[30],tb[30];
char rong[30];
}luutru[30];
int i,n,z=0;
clrscr();
//doc het
i=0;
fflush(stdin);
rewind(fp);
fgets(luutru[i].rong,2,fp);
while(!feof(fp))
{ flushall();
fgets(luutru[i].tenf,30,fp);
fgets(luutru[i].ngay,30,fp);
fgets(luutru[i].toan,30,fp);
fgets(luutru[i].ly,30,fp);
fgets(luutru[i].hoa,30,fp);
fgets(luutru[i].tb,30,fp);
fgets(luutru[i].rong,2,fp);
i++;
}
n=i;
clrscr();
fclose(fp);
flushall();
for(i=0;i<n;i++)
{
flushall();
if((strcmpi(luutru[i].tb,dieukien)>0))
{
flushall();z++;
printf("%s",luutru[i].tenf);
printf("%s",luutru[i].ngay);
printf("%s",luutru[i].toan);
printf("%s",luutru[i].ly);
printf("%s",luutru[i].hoa);
printf("%s",luutru[i].tb);
}
fflush(stdin);
};
if(z==0) printf("Khong co Ai thoa man yeu cau");
getch();
}
//-------------het ham---------------
//--------------ham tim kiem trung binh cao nhat--------
void timkiem2(FILE *fp)
{
struct thongtin
{
char tenf[30];
char ngay[30];
char toan[30],ly[30],hoa[30],tb[30];
char rong[30];
}luutru[30];
char max[30];
int i,n,h;
clrscr();
//doc het
i=0;
fflush(stdin);
rewind(fp);
fgets(luutru[i].rong,2,fp);
while(!feof(fp))
{ flushall();
fgets(luutru[i].tenf,31,fp);
fgets(luutru[i].ngay,31,fp);
fgets(luutru[i].toan,31,fp);
fgets(luutru[i].ly,31,fp);
fgets(luutru[i].hoa,31,fp);
fgets(luutru[i].tb,31,fp);
fgets(luutru[i].rong,2,fp);
i++;
}
n=i;
clrscr();
fclose(fp);
strcpy(max,luutru[0].tb);
h=0;
for(i=1;i<n;i++)
{
if(strcmpi(luutru[i].tb,max)>0)
h=i;
}
printf("nguoi co diem TB cao nhat la:
");
printf("%s",luutru[h].tenf);
printf("%s",luutru[h].ngay);
printf("%s",luutru[h].toan);
printf("%s",luutru[h].ly);
printf("%s",luutru[h].hoa);
printf("%s",luutru[h].tb);
getch();
}
//-------------het ham---------------
//--------------Chuong trinh Chinh---------------------
void main()
{ FILE *xemlaitep;
xemlaitep=fopen("demtep.txt","r");
if(xemlaitep==NULL);
else
fscanf(xemlaitep,"%d",&dem);
printf("%d",dem);
fclose(xemlaitep);
MENU();
}//-----------het chuong trinh----------
bài tập quản lý khách sạn
________________________________________
Code:
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define MAX 100
struct TIME
{
char phut;
char gio;
char ngay;
};
typedef struct ks
{
char phong[];
char hoten[30];
struct TIME d;
} hotel[MAX];
int n=1;
void menu()
{
printf("
+++++++ MENU +++++++++ ");
printf("
++ +++++ ");
printf("
++ 1. THUE PHONG +++++ ");
printf("
++ 2. TRA PHONG +++++ ");
printf("
++ 3. THONG TIN +++++ ");
printf("
++ 4. THOAT +++++ ");
printf("
+++++++++++++++++++++++ ");
printf("
Lua chon ? ");
}
void main()
{
char ch;
menu();
do{
ch=getch();
}
while(ch <'1' || ch>'4' );
switch(ch)
{
case '1': break;
case '2': break;
case '3': break;
case '4': exit(1);
default: printf(" chua chon dung");
}
getch();
}
bài tập C về tam giác Tam Giác
#include <stdio.h>
#include <math.h>
// Khai bao kieu DIEM & TAMGIAC
typedef struct
{
int x; // tung do
int y; // hoanh do
} DIEM;
typedef struct
{
DIEM dA;
DIEM dB;
DIEM dC;
} TAMGIAC;
// Nguyen mau ham
void NhapDiem(DIEM &d);
void XuatDiem(DIEM d, char *thongbao);
float TinhKhoangCach(DIEM d1, DIEM d2);
int KiemTraTamGiac(TAMGIAC tg);
void NhapTamGiac(TAMGIAC &tg);
void XuatTamGiac(TAMGIAC tg, char *thongbao);
float TinhChuVi(TAMGIAC tg);
float TinhDienTich(TAMGIAC tg);
void main()
{
TAMGIAC tg;
NhapTamGiac(tg);
XuatTamGiac(tg, "Toa do ba diem cua Tam giac:
");
printf("Chu vi Tam giac = %.2f
", TinhChuVi(tg));
printf("Dien tich Tam giac = %.2f
", TinhDienTich(tg));
}
// Dinh nghia ham
void NhapDiem(DIEM &d)
{
printf("Nhap tung do x: ");
scanf("%d", &d.x);
printf("Nhap hoanh do y: ");
scanf("%d", &d.y);
}
void XuatDiem(DIEM d, char *thongbao)
{
printf("%s", thongbao);
printf("(%d, %d)
", d.x, d.y);
}
float TinhKhoangCach(DIEM d1, DIEM d2)
{
float kq;
int dx = d1.x - d2.x;
int dy = d1.y - d2.y;
kq = sqrt(float(dx*dx + dy*dy));
return kq;
}
int KiemTraTamGiac(TAMGIAC tg)
{
float AB, AC, BC;
AB = TinhKhoangCach(tg.dA, tg.dB);
AC = TinhKhoangCach(tg.dA, tg.dC);
BC = TinhKhoangCach(tg.dB, tg.dC);
if (AC + BC > AB && AB + BC > AC && AB + AC > BC)
return 1;
else
return 0;
}
void NhapTamGiac(TAMGIAC &tg)
{
int hople;
do
{
printf("Nhap toa do Diem A:
");
NhapDiem(tg.dA);
printf("Nhap toa do Diem B:
");
NhapDiem(tg.dB);
printf("Nhap toa do Diem C:
");
NhapDiem(tg.dC);
hople = KiemTraTamGiac(tg);
if (!hople)
printf("Nhap lai! Tam giac khong hop le.
");
}
while (!hople);
}
void XuatTamGiac(TAMGIAC tg, char *thongbao)
{
printf("%s", thongbao);
XuatDiem(tg.dA, "- Toa do Diem A: ");
XuatDiem(tg.dB, "- Toa do Diem B: ");
XuatDiem(tg.dC, "- Toa do Diem C: ");
}
float TinhChuVi(TAMGIAC tg)
{
float P, AB, AC, BC;
AB = TinhKhoangCach(tg.dA, tg.dB);
AC = TinhKhoangCach(tg.dA, tg.dC);
BC = TinhKhoangCach(tg.dB, tg.dC);
P = AB + AC + BC;
return P;
}
float TinhDienTich(TAMGIAC tg)
{
float S, p, AB, AC, BC;
AB = TinhKhoangCach(tg.dA, tg.dB);
AC = TinhKhoangCach(tg.dA, tg.dC);
BC = TinhKhoangCach(tg.dB, tg.dC);
p = (AB + AC + BC) / 2;
S = sqrt(p * (p - AB) * (p - AC) * (p - BC));
return S;
}
viết chương trình QUẢN LÝ SINH VIÊN
#include <stdio.h>
#include <conio.h>
#include <string.h>
#define max 100
typedef struct { char ho[10]; char tendem[20];char ten [10]; } hoten;
typedef struct {float toan; float ly; float hoa;} diem;
typedef struct {hoten HVT; char quequan[30]; char truong[50];
unsigned char tuoi; int SBD; diem diemthi;}
sinhvien;
void nhaphoten(hoten *HVT)
{ char st[20];
printf("
Ho : ");
fflush(stdin);
strcpy(HVT->ho,st);
printf("
Ten dem : ");
fflush(stdin);
strcpy(HVT->tendem,st);
printf("
Ten : ");
fflush(stdin);
strcpy(HVT->ten,st);
}
void nhapdiem(diem *d)
{ float temp;
printf("
Diem toan: ");
scanf("%f",&temp);
d->toan=temp;
printf("
Diem ly : ");
scanf("%f", &temp);
d->ly=temp;
printf("
Diem hoa : ");
scanf("%f", &temp);
d->hoa=temp;
}
void nhap(sinhvien ds[max],int *n)
{ char st1[30];
unsigned char t;
int sbd,i;
printf("nhap vao so thi sinh:");
scanf("%d",n);
for(i=0;i<*n;i++)
{ printf("nhap thong tin thi sinh %d:
",i+1);
printf(" ho va ten:
");
nhaphoten(&ds[i].HVT);
printf(" diem thi:
");
nhapdiem(&ds[i].diemthi);
printf("truong:
");
fflush(stdin);
gets(st1);
strcpy(ds[i].truong,st1);
printf(" que quan:
");
fflush(stdin);
gets(st1);
strcpy(ds[i].quequan,st1);
printf("tuoi:
");
scanf("%d",&t);
ds[i].tuoi=t;
printf("SBD:
");
scanf("%d",&sbd);
ds[i].SBD=sbd;
}
}
void hienthi(sinhvien ds[max],int n)
{ int i;
printf("
+---+------------------+--------+------+-----+-----+-----+-----+-----+");
printf("
|STT| HO VA TEN |que quan|truong|tuoi | SBD | toan| ly | hoa |");
printf("
+---+------------------+--------+------+-----+-----+-----+-----+-----+");
for (i=0; i<n; i++)
printf("
| %3d |%5s %10s %5s| %8s| %10s | %4d | %4d |% 2.2f|%2.2f|%2.2f",i+1,
ds[i].HVT.ho,ds[i].HVT.tendem,ds[i].HVT.ten,ds[i].quequan, ds[i].truong, ds[i].tuoi, ds[i].SBD,ds[i].diemthi.toan,ds[i].diemthi.ly,ds[i].diemthi.hoa);
printf("
+---+------------------+--------+------+-----+-----+-----+-----+-----+");
}
void main()
{ int n;
sinhvien dsts[max];
nhap(dsts,&n);
printf("Danh Sach Tuyen Sinh nam 2009:
");
hienthi(dsts,n);
getch();
}
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