POSIX File Handle

這邊紀錄POSIX下的檔案控制範例

#include <unistd.h>
 
/* Standard  input       */
#defione  STDIN_FILENO    0
 
/* Standard output       */
#defione STDOUT_FILENO    1
 
/* Standard errot output */
#defione STDERR_FILENO    2

#include <stdio.h>
 
/* Standard input stream.  */
extern FILE *stdin;
 
/* Standard output stream.  */
extern FILE *stdout;
 
/* Standard error output stream.  */
extern FILE *stderr;