Convert Binary to Decimal in C

Here you will get program to convert binary to decimal in C.

We can obtain a decimal number by multiplying each digit of binary number with power of 2 and adding each multiplication result. The power starts from 0 and goes to n-1 where n is the total number of digits in binary number.

Below is the program to implement this in C.

Convert Binary to Decimal in C

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

int main()
{
	long int i,n,x=0,a;
	printf("Enter any binary number: ");
	scanf("%ld",&n);
	printf("\nThe decimal conversion of %ld is ",n);
	
	for(i=0;n!=0;++i)
	{
		a=n%10;
		x=(a)*(pow(2,i))+x;
		n=n/10;
	}
	
	printf("%ld",x);
	
	return 0;	
}

Output

Enter any binary number: 111

The decimal conversion of 111 is 7