C语言及程序设计初步例程-4 C语言程序初体验

让程序会计算：求a和b两个数之和

#include <stdio.h>
int main( )
{
    int a,b,sum;
    scanf("%d %d", &a, &b);
    sum=a+b;
    printf("%d\n", sum);
    return 0;
}	

#include <stdio.h>
int main( )
{
    int a,b,sum;
    printf("请输入两个整数：");
    scanf("%d %d", &a, &b);
    sum=a+b;
    printf("这两个整数的和是：%d\n", sum);
    printf("计算完毕，谢谢使用！\n");
    return 0;
}

#include <stdio.h>
int main( )
{
    float f,m;
    printf("Enter the length in feet: ");
    scanf("%f", &f);
    m = f / 3.28;
    printf("%f feet is %f meters.\n", f, m);
    return 0;
}