ch25-5.c

来自「C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮」· C语言 代码 · 共 33 行

#include<stdio.h>
struct stu
{
   char name[10];
   int num;
   int age;
   char addr[15];
}boya[2],boyb[2],*pp,*qq;
main()
{
   FILE *fp;
   int i;
   pp=boya;
   qq=boyb;
   if((fp=fopen("stu_list","wb+"))==NULL)
   {
      printf("Cannot open file strike any key exit!");
      getchar();
      exit(1);
   }
   printf("\ninput data:\n");
   for(i=0;i<2;i++,pp++)
   scanf("%s%d%d%s",pp->name,&pp->num,&pp->age,pp->addr);
   pp=boya;
   fwrite(pp,sizeof(struct stu),2,fp);
   rewind(fp);
   fread(qq,sizeof(struct stu),2,fp);
   printf("\n\nname\t  number   age     addr\n");
   for(i=0;i<2;i++,qq++)
   printf("%s\t%5d%7d%s\n",qq->name,qq->num,qq->age,qq->addr);
   fclose(fp);
}