include<stdio.h>

int main(int argc,char*argv[])
{
int num1=0;
int num2=0;
int sum=0;
int cha=0;
int ji=0;
int shang=0;

scanf("%d %d",&num1& ,&num2);

   sum=num1+num2;
   cha=num1-num2;
   ji=num1*num2;
   shang=(float)num1/num2;

printf("sum=%d\n,cha=%d\n,ji=%d\n,shang=%d\n",sum,cha,ji,shang);

      return 0;

                        }

除int外还有float,double