I have used CodeBlocks compiler for debugging purpose. But you can use any C++ programming language compiler as per your availability.

#include <iostream>
#include <math.h>
using namespace std;
 
//Function declaration
long long convertDecimalToBinary(int);
 
int main()
{
    int n, binaryNumber;
 
    cout << "Enter a decimal number: ";
    cin >> n;
    binaryNumber = convertDecimalToBinary(n);
    cout << n << " in decimal = " << binaryNumber << " in binary" << endl ;
    return 0;
}
 
long long convertDecimalToBinary(int n)
{
    long long binaryNumber = 0;
    int remainder, i = 1, step = 1;
 
    while (n!=0)
    {
        remainder = n%2;
        cout << "Step " << step++ << ": " << n << "/2, Remainder = " << remainder << ", Quotient = " << n/2 << endl;
        n /= 2;
        binaryNumber += remainder*i;
        i *= 10;
    }
    return binaryNumber;
}

Result:

Enter a decimal number: 19

Step 1: 19/2, Remainder = 1, Quotient = 9

Step 2: 9/2, Remainder = 1, Quotient = 4

Step 3: 4/2, Remainder = 0, Quotient = 2

Step 4: 2/2, Remainder = 0, Quotient = 1

Step 5: 1/2, Remainder = 1, Quotient = 0

19 in decimal = 10011 in binary