nested for loops pyramid c 2b 2b

1//WAP to print triangle pattern... LOGIC
2int num{}, i{1};
3  cin >> num;
4  while (i <= num) {
5    for (int space = 1; space <= (num - i); space++) {  // space
6      cout << " ";
7    }
8    for (int value = 1; value <= (2 * i - 1); value++) {  // value
9      cout << value;
10    }
11    cout << endl; //next row
12    i++;
13  }

1//C++ program to display hollow star pyramid
2
3#include<iostream>
4using namespace std;
5
6int main()
7{
8   int rows, i, j, space;
9
10   cout << "Enter number of rows: ";
11   cin >> rows;
12
13   for(i = 1; i <= rows; i++)
14   {
15      //for loop to put space in pyramid
16      for (space = i; space < rows; space++)
17         cout << " ";
18
19      //for loop to print star
20      for(j = 1; j <= (2 * rows - 1); j++)
21      {
22         if(i == rows || j == 1 || j == 2*i - 1)
23            cout << "*";
24         else
25            cout << " ";
26      }
27      cout << "\n";
28   }
29   return 0;
30}
31