#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>

#define true 0
#define false !true

int foo2(char a, char b, char c)
{
  a = 1;
  b = 2;
  c = 3;

  return 0;
}

int foo(char *buf)
{
  char c;
  char b;
  char a;  

  c = buf[0];
  b = c;
  a = buf[8];

  foo2(a, b, c);

  return true;
}

int main(int ac, char **av)
{
  int fd;
  char *buf;

  if (!(buf = malloc(32)))
    return -1;

  fd = open("./file.txt", O_RDONLY);
  read(fd, buf, 32), close(fd);
  foo(buf);
}