C Program to Convert Binary to Decimal

In this tutorial you will learn about the C Program to Convert Binary to Decimal and its application with practical example.

In this tutorial, we will learn to create a C program that will Convert Binary to Decimal in C programming.

Table Of Contents−

C Program to Convert Binary to Decimal

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following C programming topics:

Operators in C Programming.

Basic Input and Output function in C Programming.
Basic C programming.

Program to Convert Binary to Decimal:-

As we all know the c is a very powerful language. With the help of c programming language, we can make many programs. We cal perform many input-output operations using c programming. In today’s tutorial, we take the input in Binary from the user and convert it into Decimal. With the help of c programming, we can perform many conversion operations.

With the help of this program, we can Convert Binary to Decimal.

Algorithm:-

1. Declare the variables for the program. 

2. Takeing the input number from the user in binary for the program. 

3. Passing that input to the string function.

4. Pass that number to a for loop for convertion.  

4. Print the Result. 

5. End the program.

1. Declare the variables for the program.

2. Takeing the input number from the user in binary for the program.

3. Passing that input to the string function.

4. Pass that number to a for loop for convertion.

4. Print the Result.

5. End the program.

Program to Convert Binary to Decimal:-

/* C Program to Convert Binary to Decimal */

#include <stdio.h>
#include <math.h>

//user defined function for convertion declaration
int convert(long long);

//main function for the program
int main() 
{
  //declarint the variable
  long long n;
  //taking input for the conertion
  printf("Enter a binary number: ");
  scanf("%lld", &n);
  //printing the outout after convertion
  printf("%lld in binary = %d in decimal", n, convert(n));
  return 0;
}

// function definition
int convert(long long n) {
  int dec = 0, i = 0, rem;

  while (n!=0) {
    rem = n % 10;
    n /= 10;
    dec += rem * pow(2, i);
    ++i;
  }

  return dec;
}

/* C Program to Convert Binary to Decimal */

#include <stdio.h>

#include <math.h>

//user defined function for convertion declaration

int convert(long long);

//main function for the program

int main()

{

//declarint the variable

long long n;

//taking input for the conertion

printf("Enter a binary number: ");

scanf("%lld", &n);

//printing the outout after convertion

printf("%lld in binary = %d in decimal", n, convert(n));

return 0;

}

// function definition

int convert(long long n) {

int dec = 0, i = 0, rem;

while (n!=0) {

rem = n % 10;

n /= 10;

dec += rem * pow(2, i);

++i;

}

return dec;

}

Output:-

In the above program, we have first initialized the required variable.

n = in will hold the long integer value for the input.

Taking the input.

Function for Binary to decimal.

Printing the Decimal data.

Main Function.

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C Program to Convert Binary to Decimal