d_read.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 19 行

#include <stdio.h>
#include <dos.h>
#include <fcntl.h>

void main()
  {
    unsigned len_read;
    int      handle;
    auto char buffer[80];

    if( _dos_open( "file", O_RDONLY, &handle ) != 0 ) {
      printf( "Unable to open file\n" );
    } else {
      printf( "Open succeeded\n" );
      _dos_read( handle, buffer, 80, &len_read );
      _dos_close( handle );
    }
  }