#include "binary.h"
#include <stdio.h>
#include <math.h>
#include <string.h>


int convert(const char *input){
   size_t index;
   int return_val = 0;
   size_t length =  strlen(input);

   for(index = 0; index < length; ++index){
      char get_char = input[index];
      if(get_char != '0' && get_char != '1'){
         return INVALID;
      } else {
         return_val += (pow(2,length-(index+1))) * (get_char - '0');
      }
   }

   return return_val;
}