Some starting C++ code

main.cpp

#include <iostream>
using namespace std;

int main() {
	int rows;

	do // input validation loop
	{
		cout << "Enter the number of rows (must be at least 2): ";
		cin >> rows;

	}

	while (rows < 2);
	for (int curr_row = 0; curr_row < rows; curr_row++)

	{
		for (int curr_col = 0; curr_col < curr_row; curr_col++)
			cout << " ";

		cout << "#" << endl;
	}
	return 0;
}