一行代码解决题

解题思路:

注意事项:

参考代码:

#include <iostream>

using namespace std;

int main()

{

    char c;

    cin>>c;

    cout<<" "<<" "<<c<<" "<<" "<<endl<<" "<<c<<c<<c<<" "<<endl<<c<<c<<c<<c<<c;

    cout<<" "<<c<<c<<c<<" "<<endl;

    return 0;

}