C++ Program to Convert Octal Number to Binary

By | 25.12.2016

Convert Octal Number to Binary

Write a C++ Program to Convert Octal Number to Binary. Here’s simple C++ Program to Convert Octal Number to Binary in C++ Programming Language.

Numbers in C++

Normally, when we work with Numbers, we use primitive data types such as int, short, long, float and double, etc. The number data types, their possible values and number ranges have been explained while discussing C++ Data Types.

Here is source code of the C++ Program to Convert Octal Number to Binary. The C++ program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.


/*  C++ Program to Convert Octal Number to Binary  */

#include <iostream>
#include <cmath>

using namespace std;

long long convertOctalToBinary(int);
int main()
    int octalNumber;

    cout << "Enter an octal number: ";
    cin >> octalNumber;

     cout <<"\n [ "<< octalNumber << " ] in octal = [ " << convertOctalToBinary(octalNumber) << " ] in binary\n";

    return 0;

long long convertOctalToBinary(int octalNumber)
    int decimalNumber = 0, i = 0;
    long long binaryNumber = 0;

    while(octalNumber != 0)
        decimalNumber += (octalNumber%10) * pow(8,i);

    i = 1;

    while (decimalNumber != 0)
        binaryNumber += (decimalNumber % 2) * i;
        decimalNumber /= 2;
        i *= 10;

    return binaryNumber;


/*  C++ Program to Convert Octal to Binary  */

Enter an octal number: 454

 [ 454 ] in octal = [ 100101100 ] in binary

Process returned 0

Above is the source code for C++ Program to Convert Octal to Binary which is successfully compiled and run on Windows System.The Output of the program is shown above .

If you found any error or any queries related to the above program or any questions or reviews , you wanna to ask from us ,you may Contact Us through our contact Page or you can also comment below in the comment section.We will try our best to reach up to you in short interval.

Thanks for reading the post….

3 2 votes
Article Rating
Category: C++ Programming Number Programs Tags:

About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

Notify of

Inline Feedbacks
View all comments