刚碰c++遇到问题了请各位前辈指导#include<iostream.h>void hello(char *s){cout<<endl<<s<<",你们好!";}void main(){hello("同学们");hello("朋友们");}如何点执行就报警了hello.exe - 1 error(s), 0 warning(s)什么问题啊?[解决办法]