s8_12.c

来自「水电出版社的《C/C++程序设计教程》源代码」· C语言 代码 · 共 22 行

       #define SIZE 51
       #include "io.h"
       main(argc,argv)
       int argc;
       char *argv[ ];  
       {
          char buf[SIZE];
          int fd,n;
          if(argc!=2)
          {
          printf("usage: type file \n");
          exit(0);
          }
          if((fd=open(argv[1],0))==-1)
          {
          printf("cannot open %s\n",argv[1]);
          exit(0);
          }
          while((n=read(fd,buf,sizeof(buf)))>0)
          write(1,buf,n);
          exit(0);
       }