题解

注意：变量因该是string或者char

<#include <bits/stdc++.h>
using namespace std;

int main(){
    char a;
    cin>>a;
    cout<<"  "<<a<<endl;
    cout<<" "<<a<<a<<a<<endl;
    cout<<""<<a<<a<<a<<a<<a<<endl;
    cout<<" "<<a<<a<<a<<endl;
    cout<<"  "<<a<<endl;
    return 0;
}