#include<bits/stdc++.h>
#include<windows.h>
using namespace std;
int main(){
	int a,b;
	srand(time(0));
	while(1){
		a=rand()%1000+500;
		b=rand()%1000+500;
		Beep(a,b);
	}
	return 0;
}

代码杀