Programming Corner: How To Convert Decimal To Binary In C++ With Ease

The following program shows how you can convert any number in decimal (Base 10) to binary (Base 2) with ease. 

Steps:

/*

    This serves as a comment: This program converts decimal to binary

*/

#include<iostream>

using namespace std;

void binary(int num)

{

    int rem;

    if (num <= 1)

    {

        cout << num;

        return;

    }

    rem = num % 2;

    binary(num / 2);

    cout << rem;

}

int main()

{

    int dec, bin;

    cout << "Enter the number : ";

    cin >> dec;

    if (dec < 0)

        cout << dec << " is not a positive integer." << endl;

    else

    {

        cout << "The binary form of " << dec << " is ";

        binary(dec);

        cout << endl;

    }

    return 0;

}

The OUTPUT will be:

• Enter the number: (cursor will be blinking here, you can introduce any number in decimal) 
• The binary form of (the number entered in decimal)  is (answer will be displayed in binary)

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