第一题

#include<stdio.h>
int main(void)
{
    int num1,num2,sum,n,m,x,v;
    printf("Enter num1:");
    scanf("%d",&num1);
    printf("Enter num2:");
    scanf("%d",&num2);
    sum=num1+num2;
    printf("sum=%d\n",sum);
    n=num1-num2;
    printf("n=%d\n",n);
    m=num1*num2;
    printf("m=%d\n",m);
    v=num1/num2;
    printf("v=%d\n",v);
    x=num1-num2*v;
    printf("x=%d\n",x);
    return 0;
}