알고리즘과 입출력_백준_10991

#include <iostream>
using namespace std;
 
int main() {
    int num;
    bool isStar= true;
    cin >> num;
 
    for (int i = 1; i <= num; i++) {
        for (int j = 1; j <= num - i; j++) {
            cout << " ";
        }
        for (int j = 1; j <= 2 * i - 1; j++) {
            if (isStar) {
                cout << "*";
                isStar = false;
            }
            else {
                cout << " ";
                isStar = true;
            }
        }
        isStar = true;
        cout << endl;
    }
}