运行结果显示错误？请问该怎么修改？

Question

#include <iostream>using namespace std;int main(){int a;wchar_t a[100];ab:cout<<"输入"<<endl;scanf("%d",&a);if (a==1)cout<<"Good!"<<endl;if (a==2)cout<<"Bad!"<<endl;elsecout<<"Sorry, I don't know!"<<endl;cout<<endl;goto ab;return 0;}

Answer 1

int a;
wchar_t a[100]; // 变量名a跟前面的int a重名了