Programs to print triangles using *, numbers and characters

Programs to print triangles using *, numbers and characters.

#include <iostream>

using namespace std;

int main()

{

    int r;

    cout << "Enter number of rows: ";

    cin >> rows;

    for(int i = 1; i <= r; ++i)

    {

        for(int j = 1; j <= i; ++j)

        {

            cout << "* ";

        }

        cout << "\n";

    }

    return 0;

}

output