APUE 学习笔记(四) 标准I/O库

float data[10];
fwrite(&data[2], sizeof(data[0]), 4, fp);

struct {
    short count;
    long  total;
    char  name[NAMESIZE];
} item;

fwrite(&item, sizeof(item), 1, fp);

  #include <unistd.h>
  #include <fcntl.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <assert.h>
  
  #define BUFSIZE 1
  //#define BUFSIZE 8
  //#define BUFSIZE 64
  //#define BUFSIZE 256
  //#define BUFSIZE 1024
  //#define BUFSIZE 4096
  //#define BUFSIZE 9182
  
int main(int argc, char* argv[])
  {
    char buf[BUFSIZE];
    int nbytes = 0;
  /* unix read version */
      /*
      while ((nbytes = read(STDIN_FILENO, buf, BUFSIZE)) > 0) {
          if (write(STDOUT_FILENO, buf, nbytes) != nbytes) {
              fprintf(stderr, "write error\n");
          }
      }
      if (nbytes< 0) {
          fprintf(stderr, "read error\n");
      }
      */
  
      /* std c I/O version */
      int c;
      while ((c = fgetc(stdin)) != EOF) {
          if (fputc(c, stdout) == EOF) {
              fprintf(stderr, "fputc error\n");
          }
      }
      if (ferror(stdin)) {
          fprintf(stderr, "fgetc error\n");
      }
  
      return 0;
  }