Пирамида с двойни цикли

#include "stdafx.h"  // само при Visual Studio <= 2017
#include <iostream>
#include <ctime> // заради time()
using namespace std;

//C++ program to display half star pyramid

#include <iostream>
using namespace std;

int main()
{
    int n, i, j;

    cout << "Enter number of rows: ";
    cin >> n;

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