#include<stdio.h> int Sum(int x,int y); int main() { int a,b,s; printf("请输入两个整数"); scanf("%d%d",&a,&b); s=Sum(a,b); printf("两个整数的和是:%d\n",s); return 0; } int Sun(int x,int y); { int z; z=x+y; return z; }