Error with passing by reference

[sPyd3r]

I have these two prototypes

/home/spyder/sh0ck/list.h:29: error: parse error before '&' token
/home/spyder/sh0ck/list.h:30: error: parse error before '&' token

The error is in these two prototypes

char *readSock( int fd, int &len );
int handle( int sockfd[20], int &index, fd_set *set, int fdmax );

[glUser3f]

references are C++ only.

[Thantos]

You can simulate passing by reference in C by passing a pointer.
Its not as easy as the C++ way but it can be done.

#include <stdio.h>

void fun (int *);

int main (void)
{
  int x=4;
  printf("Before %d\t",x);
  fun(&x);
  printf("After %d\n",x);
  return 0;
}

void fun (int *a)
{
  (*a) = (*a) * 4;
}