#include<iostream>
using namespace std;

int main()
{
	/* Printing a triangle.
 	 * We get the number of rows. We need 2 loops
 	 * The outer loop prints one line of the triangle per iteration.
 	 * Each line has line number number of star symbols.
 	 * Inner loop is used to print one star per iteration.
 	 */

	int rows;
	cout<<"Enter the number of rows: ";
	cin>>rows;

	for(int i=0;i<rows;i++)
	{
		for(int j=0; j<=i; j++)
		{
			//here, i+1 is the line number
			cout<<"*";
		}
		cout<<endl;
	}

	return 0;
}