print pattern and space in cpp

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  }