8-5.c

《linux应用开发技术详解》的配套代码

#include <stdio.h>
struct student {
            char name[10];
            int age;
          };
int main()
{
    FILE *fp;
    int i;
    int rs;
    struct student boya[100], *qq;
    if((fp = fopen("8-3.txt","w+"))== NULL)   //打开文件
      {
          printf("Can not open file, exit ...\n");
          return -1;
      }
   rs = fread(boya, sizeof(struct student), 100, fp);
   printf("rs = %d\t", rs);
   if ( rs != 100 ) 
   {
       if (feof(fp))  				//检查是否遇到fp末尾
           printf("read end of file!\n");
       else 
           printf("read file error !\n");
    }
    qq = boya;
    for (i = 0; i < rs; i++, qq++)
        printf("%s\t\t%d\n", qq->name, qq->age);
    fclose(fp);
    return 0;
}