C++试题 救救孩子吧

Question

Answer 1

#include <iostream>
using namespace std;
int main()
{
    char c;
    cin>>c;
    for(int i=0;i<3;i++)
    {
        for(int j=0;j<2-i;j++)
            cout<<" ";
        for(int j=0;j<2*i+1;j++)
            cout<<c;
        cout<<endl;
    }

    return 0;
}