Hey Mandogon did you get it? I mean did you solve your problem?
I have also the same problem with a little difference.
I have set all of my functioons right but I have still the same error.
this is the programm.

#include<stdio. h>
#include<conio. h>
#include<iostre am.h>
int iszoj(long int a)
{
if (a%2!=0)
return (0);
return (1);
}
...