(C++) - 백준(BOJ) 10996번 : 별찍기 - 21 답

#include <iostream>
using namespace std;
int main() {
    int n;
    cin >> n;
    if (n == 1) { cout << "*" << '\n'; return 0; }
    for (int i = 1; i <= n*2; i++)
    {
        if (i % 2 == 1)
        {
            if (n % 2 == 0)
            {
                for (int j = 1; j <= n / 2; j++)
                    cout << "* ";
                cout << '\n';
            }
            else
            {
                for (int j = 1; j <= (n + 1) / 2; j++)
                    cout << "* ";
                cout << '\n';
            }
        }
        else//짝수 번째 줄
        {
            if (n % 2 == 0)
            {
                for (int j = 1; j <= n / 2; j++)
                    cout << " *";
                cout << '\n';
            }
            else
            {
                for (int j = 1; j <= (n - 1) / 2 ; j++)
                    cout << " *";
                cout << '\n';
            }
        }
    }
}