Question

How to convert octal to binary in C#

Answer 1

using System;

class Program
{
    static void Main() {
        int decimal_number = 0, oct = 23;
        int _base = 1, tmp = oct;
        
        while (tmp > 0) {
            int last_digit = tmp % 10;
            tmp /= 10;
            decimal_number += last_digit * _base;
            _base *= 8;
        }

        int mulby10 = 1, binary_number = 0;
        
        for (int i = decimal_number; i > 0; i /= 2) {
            binary_number = binary_number + (decimal_number % 2) * mulby10;
            mulby10 *= 10;
            decimal_number /= 2;
        }
        
        Console.Write(binary_number);
    }
}





/*
run:

10011

*/

 

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