#include<iostream>

using namespace std;

​

int main()

{

    int n;

    cin >> n;

    for (int i = 0; i < n; i++)

    {

        for (int j = 0; j <= i; j++)

        {

            cout << "*";

        }

        cout << "\n";

    }

    return 0;

}

#include <iostream>

using namespace std;

​

int main() {

  int size = 5;

  for (int i = 0; i < size; i++) {

    // print spaces

    for (int j = 0; j < size - i - 1; j++) {

      cout << " ";

    }

    // print stars

    for (int k = 0; k < 2 * i + 1; k++) {

      cout << "*";

    }

    cout << "\n";

  }

  return 0;

}

​

/* Output

    *

   ***

  *****

 *******

*********

​

*/

#include <iostream>

using namespace std;

​

int main()

{

    int rows;

​

    cout << "Enter number of rows: ";

    cin >> rows;

    int i = 1;

    while(i  <= rows)

    {

        int j = 1

        while(j <= i)

        {

            cout << "* ";

            j++

        }

        cout << "\n";

        i++;

    }

    return 0;

}

int num{}, i{1};

  cin >> num;

  while (i <= num) {

    for (int space = 1; space <= (num - i); space++) {  // space

      cout << " ";

    }

    for (int value = 1; value <= (2 * i - 1); value++) {  // value

      cout << value;

    }

    cout << endl; //next row

    i++;

  }