c++小游戏——迷宫

#include
#include
#include
using namespace std;
int main()
{
	int i123,ab; 
	for(i123=500;i123<=1000;i123+=100){

		Beep(i123,1000);

	}
	char a,b,c,d,aa,bb,cc,dd;
	cout<<"输入四位字母ID"; 
	cin>>a;
	cin>>b;
	cin>>c;
	cin>>d;
	
	system("cls");	//清屏函数 
	
	cout<<"请再次输入四位字母ID"; 
	cin>>aa;
	cin>>bb;
	cin>>cc;
	cin>>dd;
	if(a==aa&&b==bb&&c==cc&&d==dd)
	{
		cout<<"欢迎您"<>ab;
		if(ab==1) 
		{
			system("color 8f"); 
	int i123;

	cout<<"   ."<