Write a program to convert binary number in to decimal number.

Dr. A.P.J. Abdul Kalam Technical University, Lucknow

KCS151 / KCS251 Programming for Problem Solving - Using C Language

Lab Exercises

24. Write a program to convert a binary number into a decimal number.

/*

 File: Prgrm24.c

 Author: Aditya Saini

 Date: Jan 17, 2021

 Description: Program to convert a binary number into a decimal number.

*/

#include <stdio.h>

#include <math.h>

int main (void)

{

     int bin_num;

     int dec_num;

     int temp;

     int i;

     //Input binary number

     printf ("Input binary number: ");

     scanf ("%d", &bin_num);

     //Convert binary to decimal

     dec_num = 0;

     temp = bin_num;

     i = 0;

     while (temp != 0)

     {

          dec_num = dec_num + (temp % 10) * pow (2, i);

          temp = temp / 10;

          i++;

     }

     //Print result

     printf ("Decimal conversion of %d: %d", bin_num, dec_num);

     return 0;

};

Output

Input binary number: 10110

Decimal conversion of 10110: 22