Print pattern and space in cpp

//WAP to print triangle pattern... LOGIC
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++;
  }

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