Program that prints out its own source code

self-rep.c

#include <fcntl.h>
#include <stdio.h>
#define MAX 1024

int main(int argc, char *argv[]) {
  int fd;
  char buf[MAX];

  fd = open("self-rep.c", O_RDONLY);

  while( read(fd, buf, MAX) > 0 ) {
    printf("%s", buf);
  }

  close(fd);
  return 0;  
}