tc28-2.c

关于学习C语言的电子书籍

/******************
	  tc28-2.c
    成绩查询
******************/

#include <stdio.h>
void main()
{
    FILE *fp;
    struct student
    {
       char name[10];
       int score;
    } st;
    int i;
	printf("       成绩查询\n\n");
    fp=fopen("studbk.dat","rb");
    i=0; printf("不及格姓名\t成绩\n");
    while(!feof(fp)) {
       fseek(fp,(long)sizeof(struct student)*i,SEEK_SET);
       fread(&st,sizeof(struct student),1,fp);
       if (st.score<60 && !feof(fp))
	       printf("%s\t\t%d\n",st.name,st.score);
       i++;
    }
    rewind(fp);
    i=0; printf("优良者姓名\t成绩\n");
    while(!feof(fp)) {
       fseek(fp,(long)sizeof(struct student)*i,SEEK_SET);
       fread(&st,sizeof(struct student),1,fp);
       if (st.score>=80 && !feof(fp))
         printf("%s\t\t%d\n",st.name,st.score);
       i++;
    }
    fclose(fp);
}