Bài tập thực hành môn lập trình ppsx

Bài 1:
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,i,j;
printf("nhap vao canh a,b:");
scanf("%d%d",&a,&b);
{
for(i=1;i<=a;i++)
{
for(j=1;j<=b;j++)
printf("*");
printf("\n");
}
}
getch();
}
//ve hinh chu nhat
Bài 2:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int n;
printf("nhap vao n:");
scanf("%d",&n);
int i=0;
int tong=0;
while(i<=n)

tong = tong + pow(2,i);
i++;
printf("tong la:%f",tong);
getch();
}
//tinh tong 2^0+2^1+2^2+ +2^n
Bài 3:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int n;
printf("nhap vao n:");
scanf("%d",&n);
int i=0;
int s=0;
while(i<=n)
{
s = s + pow(2,i);
i=i+1;
}
printf("tong la:%d",s);
getch();
}
//tinh tong 2^0+2^1+ +2^n
Bài 4:
#include<stdio.h>
#include<conio.h>
void main()

{
//int n;
int i;
printf("nhap vao nam:");
//scanf("%d",&n);
scanf("%d",&i);
{
/*for(i=1;i<=n;i++)*/
if(i%4==0 && i%100==0 || i % 400 != 0)
printf("\n so nam nhuan la:%d",i);
}
getch();
}
Bài 5:
#include<stdio.h>
#include<conio.h>
void main()
{
printf("bamg cua chuong");
int i=1;
int j=1;
{
for(i=1;i<=10;i++)
{
for(j=1;j<=10;j++)
printf("\n %d * %d = %d",i,j,i*j);
}
}
getch();
}

Bài 6:
#include<stdio.h>
#include<conio.h>
void main()
{
int thang;
printf("nhap vao thang:");
scanf("%d",&thang);
switch(thang){
case 4:
case 6:
case 9:
case 11:printf("co 30 ngay");break;
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:printf("co 31 ngay");break;
case 2:
if (100%4==0) printf("co 29
ngay");
else printf("co 28 ngay");
default:printf("nhap sai");}
getch();
}
Bài 7:
#include<stdio.h>
#include<conio.h>

void main()
{
int n;
printf("nhap vao gia tri:");
scanf("%d",&n);
int i=1;
int s=0;
{
s=s+(1/i);
i++;
}
printf("tong la:%d",s);
getch();
}
Bài 8:
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
printf("nhap vao gia tri n:");
scanf("%d",&n);
int i=1;
int dem=0;
while (i<=n)
{
n%i==0;
dem=dem+i;
i++;
}

printf("tong tat ca cac uoc cua n la:%d",dem);
getch();
}
Bài 9:
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
printf("\n nhap vao gia tri n:");
scanf("%d",&n);
int i=1;
int s=0;
while (i<=n)
{
s=s+i*i;
i++;
}
printf("\n tong la:%d",s);
getch();
}
//bài 2 tinh s=1^2+2^2+3^2+ +n^2
Bài 10:
bai 1:tinh s=1+2+3+ +n
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
printf("\n nhap vao gia tri n:");

scanf("%d",&n);
int i=1;
int s=0;
while (i<=n)
{
s = s + i;
i++;
}
printf("\n tong la:%d",s);
getch();
}
Bài 11:
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int a,b,c;
float denta,x1,x2;
printf("\n nhap vao a,b,c:");
scanf("%d%d%d",&a,&b,&c);
//float denta,x1,x2;
denta=(float)(b*b)-(4*a*c);
if (denta<0)
printf("phuong trinh vo nghiem");
else
if (denta==0)
{
int x=-b/2*a;

printf("phuong trinh co nghiem kepla :x1=x2=%.2f",x);
}
else
{
x1=-b-(sqrt(denta))/(2*a);
x2=-b+(sqrt(denta))/(2*a);
printf("phuong trinh co nghiem la:");
printf("\n x1=%f",x1);
printf("\n x2=%f",x2);
}
getch();
}
//phuong trinh bac hai
Bài 12:
//nhap vao ba canh xet xem co phai tam giac thuong ,vuong,vuong can,can,deu
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
printf("nhap vao ba canh:");
scanf("%d%d%d",&a,&b,&c);
if(a+b<=c||a+c<=b||b+c<=a)
printf("khong phai la tam giac");
else if(a==b||b==c)
printf("la tam giac deu");
else if(a==b||b==c||a==c)
printf("la tam giac can");
else if (a*a+b*b==c*c||a*a+c*c==b*b||b*b+c*c==a*a)
printf("la tam giac vuong");

else if(a==b||a==c||b==c)
printf("la tam giac vong can");
else //(a+b>c||a+c>b||b+c>a)
printf("la tam giac thuong");
getch();
}
Bài 13:
//tinh tong s=1^3+2^3+ +n^3
#include<stdio.h>
#include<conio.h>
void main()
int n;
printf("\n nhap vao gia tri n:");
scanf("%d",&n);
int i=1;
int s=0;
while(i<=n)
{
s=s+i*i*i;
i=i+1;
}
printf("\n tong la:%d",s);
getch();
}
Bài 14:
//nhap diem de xem xep loai gi.neu tu 0 den 3 thi yeu,4 kem,5,6thi tb,7,8 kha,9,10 gioi;
#include<stdio.h>
#include<conio.h>
main()
{

char diem;
printf("nhap diem cua ban:");
scanf("%d",&diem);
switch (diem)
{
case 0:
case 1:
case 2:
case 3:printf("kem");break;
case 4:printf("yeu");break;
case 5:
case 6:printf("trung binh");break;
case 7:
case 8:printf("kha");break;
case 9:
case 10:printf("gioi");break;
default:printf("nhap sai");
}
}
Bài 15:
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
int s;
int i;
s=0;
i=0;
printf("nhap vao gia tri n:");

scanf("%d",&n);
while (i<=n)
{
s=s+i;
i++;
}
printf("tong la :%d",s);
getch();
}//tinh tong n=1+2+3+ +n
Bài 16:
//su dung ham tinh tong hieu tich thuong cua hai so
#include<stdio.h>
float sohoc(float,float,char);
void main()
{
int a,b;
scanf("%d%d",&a,&b);
printf("nhap vao hai so a,b:");
printf("\n tong la:%f",sohoc(a,b,'+'));
printf("\n hieu la:%f",sohoc(a,b,'-'));
printf("\n tich la:%f",sohoc(a,b,'*'));
printf("\n thuong la:%f",sohoc(a,b,'/'));
}
float sohoc(float x,float y,char tinh)
{
float kq;
switch (tinh)
{
case '+':kq=x+y;break;
case '-':kq=x-y;break;

case '*':kq=x*y;break;
case '/':kq=x/y;break;
}
return kq;
}
Bai 17:
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>
void main()
{
char ten[12],ho[10],*t;
printf("nhap vao ten:");
gets(ten);
printf("nhap vao ho:");
gets(ho);
strcat(ho,ten);
printf("Ho va ten:");
puts(ho);
getch();
int l=strlen(strcat(ho,ten));
printf("chieu dai chuoi vua nhap la:%d",l);
//t=toupper(ten);
puts(t);
}
Bài 18:
#include<stdio.h>
#include<conio.h>
#define pi 3,14

void main()
{
float r,chuvi,dientich;
printf("nhap vao ban kinh duong tron:");
scanf("%f",&r);
chuvi=(float)2*(pi)*(r);
dientich=(float)(pi)*(r*r);
printf("chu vi la:%.2f\n",chuvi);
printf("dientichla:%.2f\n",dientich);
getch();
}
Bài 19:
#include<stdio.h>
#include<conio.h>
/*{
int n;
int s;
int i;
s=0;
i=0;
printf("nhap vao gia tri n:");
scanf("%d",&n);
while (i<=n)
{
s=s+i;
i++;
}
printf("tong la :%d",s);
getch();}*/
//tinh tong n=1+2+3+ +n

void main()
{
int n;
printf("nhap vao gia tri n:");
scanf("%d",&n);
int kq = TinhTong(n);
printf("tong la:%d",kq);
getch();
}
int TinhTong( int n)
{
int s=0;
for (int i=0;i<=n;i++);
s=s+i;
//printf("tong la:%d",s);
}