求两个整数的和，差，积和平准值#include <stdio.h> int main() { int a, b, sum,dif,pro,aiv; printf("输入两个数(以空格分割): "); scanf("%d %d", &a, &b); sum = a + b; dif = a - b;pro = a * b;aiv = (a + b)/2;printf("%d + %d = %d\n", a, b, sum); printf("%d - %d = %d\n", a, b, dif);printf("%d * %d = %d\n", a, b, pro);printf("平准值是: %d",aiv); return 0; }