01 Reading Files

#include<stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
  int fd;
  char content[100]="\0";
  fd = open(argv[1], O_RDONLY);
  if(fd < 0)
  {
    printf("File could not be opened.\n");
    return 1;
  }
  else
  {
    read(fd, content, sizeof(content)-1);
    write(1, content, sizeof(content)-1);
  }
  return 0;
}