CPP Program convert binary to octal

In this program, you will learn about the conversion of binary numbers to octal numbers in the cpp programming language.

Code:

#include <iostream>

#include <cmath>

using namespace std;

int main()

{

    long long binaryNumber,original;

    cout << " Enter a binary number  ";

    cin >> binaryNumber;

original=binaryNumber;

  

    int octalNumber = 0, decimalNumber = 0, i = 0;

    while(binaryNumber != 0)

    {

        decimalNumber += (binaryNumber%10) * pow(2,i);

        ++i;

        binaryNumber/=10;

    }

    i = 1;

    while (decimalNumber != 0)

    {

        octalNumber += (decimalNumber % 8) * i;

        decimalNumber /= 8;

        i *= 10;

    }

      cout << original << "   in binary   " << octalNumber<< "  in octal  "<<endl;

return 0;

}

Output:

 Enter a binary number  1111

1111   in binary   17  in octal

In the above program,first convert binary number to decimal then convert decimal to octal number .Two while loops are used in the code for conversion.