题解 | #菱形图案#

#include <iostream>
using namespace std;

#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    int k;
    while (cin >> k)
    {
        for (int i = 0; i < 2*k+1; i++)
        {
            for (int j = 0; j < k+1; j++)
            {
                if (j < abs(k - i)) cout << " ";
                else cout << "* ";
            }           
            cout << endl;
        }
   }
   
    return 0;
}
// 64 位输出请用 printf("%lld")