#include<stdio.h> #include<string.h> #include<stdlib.h> int m, n; struct student { int num; char name[10]; char sex[5]; char class[10]; char major[10]; int dorm; }stu[1]; void input() { int i = 0; char t = 'y'; FILE *fp; fp = fopen("inform.txt", "w"); if (fp = NULL) { printf("error!\n"); exit(0); while (1) { printf("please enter student data:"); scanf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i].num, &stu[i].dorm, &stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); printf("是否繼續輸入(y/n)?: "); scanf("%c", &t); if (t == 'y' || t == 'Y') { i++; } } } fclose(fp); } void add() { int i = 0; char t = 'y'; FILE *fp; fp = fopen("inform.txt", "w"); if (fp = NULL) { printf("error!\n"); exit(0); while (1) { printf("please enter student data:"); scanf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i].num, &stu[i].dorm, &stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); printf("是否繼續添加(y/n)?: "); scanf("%c", &t); if (t == 'y' || t == 'Y') { i++; } } } fclose(fp); } void del() { int i, num; char t = 'y'; FILE *fp, *fp1; printf("please enter del num:"); scanf("%d", &num); printf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i]

void del() { int i, num; char t = 'y'; FILE *fp, *fp1; printf("please enter del num:"); scanf("%d", &num); printf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i].num, &stu[i].dorm, &stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); for (n = i; n<m; n++) { stu[n] = stu[n + 1]; } printf("OK"); printf("是否繼續刪除(y/n)?: "); scanf("%c", &t); if (t == 'y' || t == 'Y') { i++; } fclose(fp); } void change() { FILE *fp; int num, i = 0; char t = 'y'; fp = fopen("inform.txt", "rb+"); while (t == 'y' || t == 'Y') { while (1) { printf("請輸入修改的學號："); scanf("%d", &num); if (num > 0) break; } while (!feof(fp)) { i = 0; fread(&stu[i], (long)sizeof(struct student), 1, fp); if (stu[i].num == num&&i == 0) { printf("你要修改的學生的信息:\n"); printf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i].num, &stu[i].dorm, &stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); i++; printf("你要修改的學生的信息:\n"); printf("please enter student data:"); scanf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i].num, &stu[i].dorm, &stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); fseek(fp, -(long)sizeof(struct student), 1); fwrite(&stu[i], (long)sizeof(struct student),

&stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); fseek(fp, -(long)sizeof(struct student), 1); fwrite(&stu[i], (long)sizeof(struct student), 1, fp); fseek(fp, (long)sizeof(struct student), 1); } } printf("是否繼續修改(y/n):"); scanf("%c", &t); if (t == 'y' || t == 'Y') { rewind(fp); i = 0; } } fclose(fp); } void search() { FILE *fp; int num,i=0; char t = 'y'; fp = fopen("inform.dat", "rb"); while (t == 'y' || t == 'Y') { while (1) { printf("請輸入查詢的學號:"); scanf("%d", &num); if (num > 0) break; } while (!feof(fp)) { fread(&stu[i], (long)sizeof(struct student), 1, fp); if (stu[i].num == num) { printf("%d\n%d\n%s\n%c\n%s\n%s\n", &stu[i].num, &stu[i].dorm, &stu[i].name, &stu[i].sex, &stu[i].class,&stu[i].major); break; } } printf("是否要繼續查找(y/n):"); scanf("%c", &t); if (t == 'y' || t == 'Y') { rewind(fp); } fclose(fp); } } void off() { exit(0); } void main() { char ch; do { printf(" 歡迎進入高校學生宿舍學生信息管理系統 \n"); printf(" \n"); printf(" \n"); printf("