练习 2-1

#include<stdio.h>
int main(void)
{
    int num1,num2;
    double x,y;
    double z,k;
    printf("Enter num1:");
    scanf("%d",&num1);
    printf("Enter num2:");
    scanf("%d",&num2);
    x = num1+num2;
    y = num1-num2;
    z = num1*num2;
    k = num1/num2;
    printf("x=%.0f\n",x);
    printf("y=%.0f\n",y);
    printf("z=%.0f\n",z);
    printf("k=%.3f\n",k);
    return 0;

}