C program fractional binary conversion from decimal

C code for fractional binary to decimal converter:

#include<stdio.h>

#define MAX 1000

int main(){

    long double fraDecimal=0.0,dFractional=0.0 ,fraFactor=0.5;

    long int dIntegral = 0,bIntegral=0,bFractional[MAX];

    long int intFactor=1,remainder,i=0,k=0,flag=0;

    char fraBinary[MAX];

    printf("Enter any fractional binary number: ");

    scanf("%s",&fraBinary);

   

    while(fraBinary[i]){

        

         if(fraBinary[i] == '.')

             flag = 1;

         else if(flag==0)

             bIntegral = bIntegral * 10 + (fraBinary[i] -48);

         else

              bFractional[k++] = fraBinary[i] -48;

         i++;

    }

   

    while(bIntegral!=0){

        remainder=bIntegral%10;

        dIntegral= dIntegral+remainder*intFactor;

        intFactor=intFactor*2;

        bIntegral=bIntegral/10;

    }

   

    for(i=0;i<k;i++){

         dFractional  = dFractional  + bFractional[i] * fraFactor;

         fraFactor = fraFactor / 2;

    }

    fraDecimal = dIntegral + dFractional ;

    printf("Equivalent decimal value: %Lf",fraDecimal);

   

    return 0;

}

Sample output:

Enter any fractional binary number: 11.11

Equivalent decimal value: 3.750000