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

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

KCS151 / KCS251 Programming for Problem Solving - Using C Language

Lab Exercises

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

/*

 File: Prgrm23.c

 Author: Aditya Saini

 Date: Jan 17, 2021

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

*/

#include <stdio.h>

#include <math.h>

int main (void)

{

     int dec_num;

     int bin_num;

     int temp;

     int i;

     //Input decimal number

     printf ("Input decimal number: ");

     scanf ("%d", &dec_num);

     //Convert decimal to binary

     bin_num = 0;

     temp = dec_num;

     i = 0;

     while (temp != 0)

     {

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

          temp = temp / 2;

          i++;

     }

     //Print result

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

     return 0;

};

Output

Input decimal number: 29

Binary conversion of 29: 11101