[백준] 2446번 : 별 찍기-9 - C++

https://www.acmicpc.net/problem/2446

#include <iostream>

using namespace std;

int main() {
    int n;
    cin>>n;
    for(int i=n;i>=1;i--){
        for(int j=0;j<n-i;j++) cout<<" ";
        for(int j=0;j<(i-1)*2+1;j++) cout<<"*";
        cout<<"\n";
    }
    for(int i=2;i<=n;i++){
        for(int j=0;j<n-i;j++) cout<<" ";
        for(int j=0;j<(i-1)*2+1;j++) cout<<"*";
        cout<<"\n";
    }
}