Write a C program to convert Binary numbers into Decimal numbers using recursive function.

 Write a C program to convert Binary numbers into Decimal

numbers using recursive function.

#include<stdio.h>

#include<stdlib.h>

int dec(int bin)

{

if (bin==0)

return 0;

else

return (bin % 10 +dec(bin/10)*2);

}

void main()

{

int b,bin;

printf("Enter a binary number\n");

scanf("%d", &bin);

b=bin;

while(b>1)

{

if(b%10>1)

{

printf("Invalid binary number");

exit(0);

}

b=b/10;

}

printf("The decimal equivalent is %d", dec(bin));

}