Example: C++ program to convert decimal to binary without using array

C
C++
C#
Java
Python
PHP

// C++ program to convert decimal to binary without using array
#include <iostream>
using namespace std;

// The main function of the program
int main()
{
    // Step-1 Declare variables
    int num;
    long long binary = 0;
    int place = 1;

    // Step-2 Input decimal number
    cout << "Enter a decimal number: ";
    cin >> num;

    // Step-3 Convert to binary without using array
    while (num != 0) {
        int remainder = num % 2;
        binary += remainder * place;
        num /= 2;
        place *= 10;
    }

    // Step-4 Output the binary number
    cout << "Binary representation: " << binary << endl;

    return 0;
}