Bài tập thực hành cơ sở lập trình

t include include main() { float a,b,x; printf(Nhap a ); scanf(%f, a); printf(Nhap b ); scanf(%f, b); if(a=0) { x= ba; printf(Nghiem x= %f, x); } else if(b=0) printf(phuong trinh vo nghiem); else printf(phuong trinh vo so nghiem); getch(); } 2 include include include main() { float a,b,c,delta,x,x1,x2; printf(Nhap a = ); scanf(%f, a); printf(Nhap b = ); scanf(%f, b); printf(Nhap c = ); scanf(%f, c); if(a=0).

printf("Nhap a : "); scanf("%f", &a);

printf("Nhap b : "); scanf("%f", &b);

printf("Nhap a = "); scanf("%f", &a);

printf("Nhap b = "); scanf("%f", &b);

printf("Nhap c = "); scanf("%f", &c);

printf("Phuong trinh vo nghiem");

printf("\n y=a+1*2+16/1+3= %d",y);

printf("\n lan thu %d",lan);

printf("\n i=%d j=%d",i,j);

printf("\n dieu kien= %d",2*i<3*j);

:

#include <stdio.h>

#include <conio.h>

int max2(int a, int b); // Khai bao ham max 2 so

int max3(int a, int b, int c); // Khai bao ham max 3 so

int max4(int a, int b, int c, int d); // Khai bao ham max 4 so int max2(int a, int b)

{

return a > b ? a : b; // Neu a>b max la a, nguoc lai max la b }

// Max cho 3 so

int max3(int a, int b, int c) {

return max2( max2(a, b), c);

printf("So lon nhat trong a, b la %d\n", max2(a, b));

printf("So lon nhat trong a, b, c la %d\n", max3(a, b, c)); printf("So lon nhat trong a, b, c, d la %d\n", max4(a, b, c, d)); return 0;

float x[3]={15.11,129,8999}; float p;

printf(" so tu trong chuoi la: %d \n",j);

else printf("\n Chuoi da nhap doi xung \n");

printf(" max la: %d \n",fmax(a,n));

printf(" min la: %d \n",fmin(a,n));

// Ham sap xep tang dan

int fsxtd(int a[],int n)

// Ham sap xep giam dan

int fsxgd(int a[],int n)

printf ("\n a[%d]= ",i);

printf ("\n a[%d]= ",i);

scanf("%f",a+i); // tuong duong &a[i] }

s=0;

for (i=0;i<n;i++) s=s+a[i];

printf("\n Tong S= %f ",s); getch();

for (i=0;i<n;i++) s=s+pa[i];

printf ("\n a[%d]= ",i);

scanf("%f",pa+i); // tuong duong pa[i]

}

printf("\n Tong gia tri cac phan tu cua mang = %d ",t1);

printf("\n Tong gia tri cac phan tu nho hon h = %d",t2);

float s=0,td=0; // s la tong, td la tong duong

int sa=0; // sa so cac phan tu am

printf("\n tong la: %f ",s);

printf("\n tong duong la: %f ",td);

printf("\n so phan tu am la: %d ",sa);

printf("\n Nhap a= ");scanf("%d",&a);

printf("\n Nhap b= ");scanf("%d",&b);

gtmax=pf(a,b); // Su dung con tro ham

printf("\n Max cua a %d va b %d la bang %d",a,b,gtmax);

f=ham; // gan ten ham cho on tro ham

printf("\n Lap phuong cua %d phong la %d",n,f(n)); // Su dng con tro ham getch();

}

kq=pf(p,a); // Lay ket qua ham

printf("\n So phan tu thoa man %d",kq);

int (*pf)(int,int); // Khai bao con tro ham int main()

{

int i,n,h,a,p,kq;

printf("Nhap n<=50");scanf("%d",&n); int c[n];

printf("Nhap h=");scanf("%d",&h);

printf("Nhap a=");scanf("%d",&a);

for (i=0;i<n;i++) {

printf ("\n c[%d]= ",i); scanf("%d",&c[i]); }

if (ds[i].dtk<ds[j].dtk) {

tg=ds[i];

ds[i]=ds[j];

ds[j]=tg;

} printf("\n Danh sach sau sap xep la: ");

// Nhap du lieu cho sinh vien thu 1

printf("Nhap du lieu cho sv1:\n");

printf("MSV: "); fflush(stdin);

gets(sv1.MSV);

printf("Ho ten: "); fflush(stdin);

gets(sv1.hoten);

printf("Diem toan, tin, anh: "); fflush(stdin);

scanf("%lf %lf %lf", &sv1.toan, &sv1.tin, &sv1.anh);

// Nhap du lieu cho sinh vien thu 2

printf("Nhap du lieu cho sv2:\n");

printf("MSV: "); fflush(stdin);

gets(sv2.MSV);

printf("Ho ten: "); fflush(stdin);

gets(sv2.hoten);

printf("Diem toan, tin, anh: "); fflush(stdin);

scanf("%lf %lf %lf", &sv2.toan, &sv2.tin, &sv2.anh); printf("\n Thong tin sinh vien \n");

printf("%-20s %-30s %-7s %-7s %-7s\n", "MSV", "Ho ten", "Toan", "Tin", "Anh");

printf("%-20s %-30s %-7.2lf %-7.2lf %-7.2lf\n", sv1.MSV, sv1.hoten, sv1.toan, sv1.tin, sv1.anh); printf("%-20s %-30s %-7.2lf %-7.2lf %-7.2lf\n", sv2.MSV, sv2.hoten, sv2.toan, sv2.tin, sv2.anh); return 0;

}

char MSV[20]; // ma sinh vien

char hoten[30]; // ho ten sinh vien

double toan, tin, anh; // cac diem toan, tin, anh

printf("Diem toan, tin, anh: "); fflush(stdin);

scanf("%lf %lf %lf", &sv1.toan, &sv1.tin, &sv1.anh);

sv2 = sv1; // gan gia tri cua sv1 cho sv2

printf("\n - Thong tin sinh vien -\n");

printf("%-20s %-30s %-7s %-7s %-7s\n", "MSV", "Ho ten", "Toan", "Tin", "Anh");

printf("%-20s %-30s %-7.2lf %-7.2lf %-7.2lf\n", sv2.MSV, sv2.hoten, sv2.toan, sv2.tin, sv2.anh); return 0;

}

printf("\n - Thong tin sinh vien -\n");

printf("%-20s %-30s %-7s %-10s\n", "MSV", "Ho ten", "Diem Tb", "Ngay sinh");

// cap phat bo nho

struct sinhvien *lophc = (struct sinhvien*) malloc(n * sizeof(struct sinhvien));

printf("\n - Thong tin sinh vien -\n");

printf("%-20s %-30s %-7s %-10s\n", "MSV", "Ho ten", "Diem Tb", "Ngay sinh");

for (i = 0; i < n; i++)

{

#define ns lophc[i].ns

printf("%-20s %-30s %-7.2lf %02d/%02d/%4d\n", lophc[i].MSV, (*(lophc+i)).hoten,

(lophc+i)->diemTB, ns.ngay, ns.thang, ns.nam);

}

return 0;

}

( )

printf("\n NHAP SINH VIEN THU %d",i);

printf("\n Ma SV = ");scanf("%d",&sv[i].masv);

printf("Ho ten = ");scanf("%s",&sv[i].hoten);

printf("Diem toan, li, hoa =");scanf("%f%f%f",&sv[i].dt,&sv[i].dl,&sv[i].dh);

} FILE *f;

f=fopen("Bai6p9.txt","w");

if (f!=NULL) {

for (i=1;i<=n;i++) {

fprintf(f,"SV thu %d\n",i);

} getch();

return(0);

}

printf("\n Tich am = %f ",ta);

printf("\n Tich duong = %f ",td);

printf("\n So phan tu am = %d ",sa);

printf("\n So phan tu duong = %d ",sd);

printf("\n So phan bang khong = %d ",sk);

getch();

}

printf("\n NHAP SINH VIEN THU %d",i);

printf("\n Ma SV = ");fflush(stdin);scanf("%d",&sv[i].masv);

printf("Ho ten = ");fflush(stdin);scanf("%s",&sv[i].hoten);

printf("Diem toan, li, hoa = ");fflush(stdin);scanf("%f%f%f",&sv[i].dt,&sv[i].dl,&sv[i].dh);

} FILE *f;

f=fopen("Bai6p17.txt","w");

rewind(f);

for (i=0;i<n;i++

{ fprintf(f,"MaSV:%d\n",sv[i].masv);

fprintf(f,"Ho ten:");

fputs(sv[i].hoten,f);

fprintf(f,"\nDiemtoan:%0.2f\nDiemli:%0.2f\nDiemhoa:%0.2f\n",sv[i].dt,sv[i].dl,sv[i].dh);

} fclose(f);

printf("\n NHAP SINH VIEN THU %d",i);

printf("\n Ma SV = ");fflush(stdin);scanf("%d",&sv[i].masv);

printf("Ho ten = ");fflush(stdin);gets(sv[i].hoten);

printf("Diem toan, li, hoa = ");fflush(stdin);scanf("%f%f%f",&sv[i].dt,&sv[i].dl,&sv[i].dh);

} FILE *f;

f=fopen("Bai6p17.txt","w");

rewind(f);

for (i=0;i<n;i++) {

getch();

return(0);

}

char name[255]; // khai bao bien ten

FILE *fi = fopen("input.txt", "r"); // mo file goc de doc, tu FILE phai viet HOA FILE *fo = fopen("output.txt", "w"); // mo file de ghi, tu FILE phai viet HOA fscanf(fi, "%d", &n); // doc so n tu file fi

fgets(name, 255, fi); // loai bo dau xuong dong sau khi doc so n for(i = 0; i < n; i++)

{

fgets(name, 255, fi); // doc chuoi gom 255 ky tu tu file fi

fprintf(fo, "%d.%s", (i+1), name); // ghi chuoi ra file fo

}

fclose(fi); // dong file fi

fclose(fo); // dong file fo

char fname1[40], fname2[40];

printf("Nhap ten cua file thu nhat: ");

if(n == 0) return 1; // dieu kien dung

return giaiThua(n-1) * n; // loi goi chinh no

break;

case 8: printf("Thin \n"); break;

case 9: printf("Ty \n"); break;

case 10: printf("Ngo \n"); break;

case 11: printf("Mui \n"); break;

default: printf("");

}

getch();

}