Decimal to Octal

#include <iostream>
#include <cmath>

using namespace std;
int decimalToOctal(int decimalNumber);
// Function to convert decimal number to octal
int decimalToOctal(int decimalNumber)
{
  int rem, i = 1, octalNumber = 0;
  while (decimalNumber != 0)
  {
    rem = decimalNumber % 8;
    decimalNumber /= 8;
    octalNumber += rem * i;
    i *= 10;
  }
  return octalNumber;
}