题解 | 牛牛的字符菱形

#include <iostream>
using namespace std;

int main() {
    int n=5;
    char ch;
    cin>>ch;
    for(int i=1;i<=n;i++)
    {
        switch(i){
            case 1:
            case 5:
                cout<<"  "<<ch<<endl;
                break;
            case 2:
            case 4:
                cout<<" "<<ch<<ch<<ch<<endl;
                break;
            case 3:
                cout<<""<<ch<<ch<<ch<<ch<<ch<<endl;
                break;
            default:;
        }
    }
}
// 64 位输出请用 printf("%lld")