writefile.c

学习数据库的 很好教材 里面有经典的案例和相关数据库的习题 答案

#include<stdio.h>

struct student
{
  int sno;
  char name[10];
  int grade;
}stud[2],*p;

main()
{
  FILE *fp;
  int i;
  p=stud;
  
  if((fp=fopen("stu_list","wb+"))==NULL)
  {
    printf("Cannot open file strike any key exit!");
    getch();
    exit(1);
  }
  printf("\nPlease input 2 students:sno,name,grade\n");
  for(i=0;i<2;i++,p++)
  scanf("%d%s%d",&p->sno,p->name,&p->grade);
  p=stud;
  fwrite(p,sizeof(struct student),2,fp);
  fclose(fp);
}