Decimal to Binary in C++ (Using Loop & Array)

#include <iostream>

using namespace std;

int main() {

    int decimalNum;

    int binaryNum[32];  // To store binary digits

    int index = 0;      // Counter for binary array

    cout << "Enter a decimal number: ";

    cin >> decimalNum;

    int tempNum = decimalNum;

    if (decimalNum == 0) {

        cout << "Binary: 0";

        return 0;

    }

    // Process of dividing by 2 and storing remainder

    while (decimalNum > 0) {

        binaryNum[index] = decimalNum % 2;

        decimalNum = decimalNum / 2;

        index++;

    }

    cout << "Binary of " << tempNum << " is: ";

    // Printing binary in reverse order

    for (int i = index - 1; i >= 0; i--) {

        cout << binaryNum[i];

    }

    cout << endl;

    return 0;

}