// draw a right-angled triangle with sides equal to the input number n
#include <iostream>

using std::cout;
using std::cin;
using std::endl;

// function main
int main() 
{
  int lunghezza;
  int number = 1;

  cout << " Side lenght: ";
  cin >> lunghezza;

  while (number <= lunghezza) {
    for(int i = 1; i<= number; i++)
      cout << "* ";
    cout << endl; 
    number++;
  } //end while 

  return 0; // successful termination

} // end main