A. 实验1_1_求两数的和与差

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