昨天一朋友要我帮她写个“图书管理小系统”，一时嘴贱就答应了。
要求如下：
看着还可以，昨晚把基本框架写了下，今天写了一下午，接近600行，总算写完了。由于她明天就要交，我就赶了点，很多地方还没写好。
但总体来说也让我对文件输出输入有了更进一步的了解了，不过没有用结构体指针，用了的话应该可以 节约很多内存。看以后有没有时间
去完善它吧。
发几个界面看看：
先把代码贴下：
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <stddef.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <windows.h>
7 #define MAX 20
8 struct Borrow{
9 char name[MAX]; //用户名
10 int num; // 借书数量
11 int number[MAX]; //书的编号
12 char book[MAX][MAX]; //书名
13 }bor[5000];
14
15 struct Student{
16 char name[MAX]; //用户名
17 char password[MAX]; //密码
18 //Borrow book; //借书信息
19 char sex[MAX]; //性别
20 //struct student *next; //结构体指针
21 }stu[5000];
22
23 struct Book{
24 int number; //编号
25 char bookName[MAX]; //书名
26 int num; //书的数量
27 }book[10000];
28 //stu *head; //指针头
29 int i, j, l, n, flag, cnt, k, MAX_BOR, MAX_BOOK;
30 void regist(){ //注册功能
31 system("cls");
32 FILE *fin,*fout;
33 fin = fopen("user.txt","r+");
34 char s[20],ss[20],sss[10];
35 if(fin!=NULL){
36 while(fscanf(fin,"%s %s %s",stu[i].name,stu[i].password,stu[i].sex)!=EOF){
37 i++;
38 }
39 }
40 fclose(fin);
41 fout = fopen("user.txt","a+");
42 system("cls");
43 do{
44 printf("请输入用户名：");
45 scanf("%s",s);
46 for(j = 0; j < i; j ++){
47 if(!strcmp(s,stu[j].name)){
48 system("cls");
49 printf("该用户名已经注册了！");
50 goto tt;
51 }
52 }
53 printf("\n请输入密码：");
54 scanf("%s",ss);
55 printf("\n请输入性别(男或女):");
56 scanf("%s",sss);
57 fprintf(fout,"%s\t%s\t%s\n",s,ss,sss);
58 break;
59 tt:;
60 }while(1);
61 fclose(fout);
62 }
63
64 void login(){ //登入功能
65 n = 3;
66 char s[20],ss[20];
67 FILE *fin;
68 fin = fopen("user.txt","r+");
69 i = 0;
70 while(fscanf(fin,"%s %s %s",stu[i].name,stu[i].password,stu[i].sex)!=EOF){
71 i++;
72 }
73 fclose(fin);
74 flag = 0;
75 system("cls");
76 do{
77 printf("\n\n\n\t\t请输入用户名：");
78 scanf("%s",s);
79 printf("\n\t\t请输入密码 ：");
80 scanf("%s",ss);
81 for(j = 0; j < i; j ++){
82 if(!strcmp(s,stu[j].name)&&!strcmp(ss,stu[j].password)){
83 cnt = j; //标记登入的用户下标
84 flag = 1;
85 break;
86 }
87 }
88 if(flag)break;
89 system("cls");
90 printf("用户名或密码错误！\n");
91 }while(n--);
92
93 }
94
95 void print(){ //显示用户借书信息
96 void loadBor();
97 loadBor();
98 for(j = 0; j < MAX_BOR; j ++){
99 if(!strcmp(stu[cnt].name,bor[j].name)){
100 break;
101 }
102 }
103 if(j == MAX_BOR){
104 printf("|\t\t\t\t\t借书为0。|\n");
105 }else{
106 printf("|\t\t已经借的书为：\t\t\t|\n");
107 if(bor[j].num == 0){
108 printf("|\t\t\t借书为0.\t\t|\n");
109 }else{
110 for(l = 0; l < bor[j].num; l ++){
111 printf("|\t\t%d\t%s\t\t|\n",bor[j].number[l],bor[j].book[l]);
112 }
113 }
114 printf("|\t\t\t\t\t\t|\n");
115
116 }
117 printf("|_______________________________________________|\n\n");
118 }
119
120 void loadBor(){ //加载借书信息
121 FILE *fin;
122 fin = fopen("borrow.txt","r+");
123 k = 0;
124 while(fscanf(fin,"%s %d",bor[k].name,&bor[k].num)!=EOF){
125 for(j = 0; j < bor[k].num; j++){
126 fscanf(fin,"%d %s",&bor[k].number[j],bor[k].book[j]);
127 // printf("%s\t",bor[k].book[j]);
128 }
129 k++;
130 }
131 MAX_BOR = k;
132 fclose(fin);
133 }
134
135 void loadBook(){ //加载图书信息
136 FILE *fin;
137 fin = fopen("book.txt","r+");
138 k = 0;
139 while(fscanf(fin,"%d %s %d",&book[k].number,book[k].bookName,&book[k].num)!=EOF){
140 k++;
141 }
142 MAX_BOOK = k;
143 fclose(fin);
144 }
145
146 void writeBor(){ //将借书信息写入文件
147 FILE *fp;
148 fp = fopen("borrow.txt","w");
149 for(j = 0; j < MAX_BOR; j ++){
150 fprintf(fp,"%s\t%d\t",bor[j].name,bor[j].num);
151 for(k = 0; k < bor[j].num; k ++){
152 fprintf(fp,"%d\t%s\t",bor[j].number[k],bor[j].book[k]);
153 }
154 fprintf(fp,"\n");
155 }
156 fclose(fp);
157 }
158
159 void writeBook(){ //将图书信息写入文件
160 FILE *fp;
161 fp = fopen("book.txt","w");
162 for(j = 0; j < MAX_BOOK; j ++){
163 fprintf(fp,"%d\t%s\t%d\n",book[j].number,book[j].bookName,book[j].num);
164 }
165 fclose(fp);
166 }
167
168 void printFun(){ //显示界面
169 system("cls");
170 printf(" _______________________________________________ \n");
171 printf("|\t\t欢迎进入图书管理系统！\t\t|\n");
172 printf("|\t<1>还书\t\t");
173 printf("<2>借书\t\t\t|\n");
174 printf("|\t\t\t\t\t\t|\n");
175 printf("|\t<3>查询图书\t");
176 printf("<4>删除图书\t\t|\n");
177 printf("|\t\t\t\t\t\t|\n");
178 printf("|\t<5>添加图书\t");
179 printf("<6>修改图书\t\t|\n");
180 printf("|\t\t\t\t\t\t|\n");
181 printf("|\t<7>显示图书\t");
182 printf("<8>刷新\t\t\t|\n");
183 printf("|\t\t\t\t\t\t|\n");
184 printf("|\t<9>退出\t\t\t\t\t|\n"); //退出
185 printf("|_______________________________________________|\n\n");
186 }
187
188 void move(){ //还书功能
189 system("cls");
190 print();
191 int m;
192 loadBor();
193 for(m = 0; m < MAX_BOR; m ++){
194 if(!strcmp(stu[cnt].name,bor[m].name)){
195 break;
196 }
197 }
198 if(m== MAX_BOR || bor[m].num == 0){
199 printf("你当前的借书量为0，不需要还书\n按任意键继续...");
200 getchar();
201 getchar();
202 return;
203 }
204 printf("请输入还书的书号：");
205 int num;
206 char s[MAX];
207 scanf("%d",&num);
208 for(j = 0; j < bor[m].num; j ++){
209 if(num == bor[m].number[j]){
210 strcpy(s,bor[m].book[j]);
211 break;
212 }
213 }
214 if(j != bor[m].num){
215 for(; j < bor[m].num-1; j ++){
216 bor[m].number[j] = bor[m].number[j+1];
217 strcpy(bor[m].book[j],bor[m].book[j+1]);
218 }
219 bor[m].num--;
220 writeBor();
221 loadBook();
222 for(k = 0; k < MAX_BOOK; k ++){
223 if(num == book[k].number){
224 book[k].num++;
225 break;
226 }
227 }
228 if(k == MAX_BOOK){
229 book[k].number = num;
230 strcpy(book[k].bookName,s);
231 book[k].num = 1;
232 MAX_BOOK++;
233 }
234 writeBook();
235 }else{
236 printf("请输入正确的书号！\n");
237 getchar();
238 getchar();
239 move();
240 return;
241 }
242
243 }
244
245 void take(){ //借书功能
246 loadBook();
247 system("cls");
248 printf("请输入要借的书的书号：");
249 int num;
250 scanf("%d",&num);
251 int m;
252 for(m = 0; m < MAX_BOOK; m ++){
253 if(num == book[m].number){
254 break;
255 }
256 }
257 if(m == MAX_BOOK){
258 printf("你输入的书号有误。。。。\n");
259 getchar();
260 return;
261 }
262 if(book[m].num != 0){
263 printf("书号：%d\t书名：“%s”借书成功！！！\n",book[m].number,book[m].bookName);
264 book[m].num--;
265 writeBook();
266 for(j = 0; j < MAX_BOR; j ++){
267 if(!strcmp(stu[cnt].name,bor[j].name))break;
268 }
269 if(j == MAX_BOR){
270 strcpy(bor[j].name,stu[cnt].name);
271 bor[j].num = 0;
272 MAX_BOR++;
273 }
274 bor[j].number[bor[j].num] = num;
275 strcpy(bor[j].book[bor[j].num],book[m].bookName);
276 bor[j].num++;
277 writeBor();
278 }else{
279 printf("你想借的“%s”已经被借完了！！！",book[m].bookName);
280 }
281 getchar();
282 }
283
284 void check(){ //查询图书
285 loadBook();
286 system("cls");
287 int choice;
288 printf(" ___________________________________________ \n");
289 printf("|\t\t查询图书\t\t |\n");
290 printf("|\t\t\t\t\t |\n");
291 printf("|\t\t\t\t\t |\n");
292 printf("|\t书号【1】\t书名【2】\t |\n");
293 printf("|\t\t\t\t\t |\n");
294 printf("|\t\t\t\t\t |\n");
295 printf("|___________________________________________|\n");
296 printf("\n请输入(0退出)：");
297 scanf("%d",&choice);
298 if(choice == 1){
299 int num;
300 printf("请输入书号：");
301 scanf("%d",&num);
302 for(j = 0; j < MAX_BOOK; j ++){
303 if(num == book[j].number)break;
304 }
305 if(j == MAX_BOOK){
306 printf("书号为%d的图书不存在！！！",num);
307 }else{
308 printf("\n书号为%d的信息如下:\n",num);
309 printf("\n\t图书名字为：%s\n\n\t储存数量为:%d\n\n",book[j].bookName,book[j].num);
310 }
311 }else if(choice == 2){
312 char s[MAX];
313 printf("请输入书名：");
314 scanf("%s",s);
315 for(j = 0; j < MAX_BOOK; j ++){
316 if(!strcmp(s,book[j].bookName))break;
317 }
318 if(j == MAX_BOOK){
319 printf("书名为“%s”的图书不存在！！！",s);
320 }else{
321 printf("书名为“%s”的信息如下\n",book[j].bookName);
322 printf("\t书号为：%d\n\t储存数量为:%d\n",book[j].number,book[j].num);
323 }
324 }
325 getchar();
326 }
327
328 void dele(){ //删除图书
329 system("cls");
330 printf(" ___________________________________________ \n");
331 printf("|\t\t删除图书\t\t |\n");
332 printf("|\t\t\t\t\t |\n");
333 printf("|\t\t\t\t\t |\n");
334 printf("|\t书号【1】\t书名【2】\t |\n");
335 printf("|\t\t\t\t\t |\n");
336 printf("|\t\t\t\t\t |\n");
337 printf("|___________________________________________|\n");
338 printf("请输入(0退出)：");
339 int chioce;
340 scanf("%d",&chioce);
341 loadBook();
342 if(chioce == 1){
343 printf("请输入书号：");
344 int num;
345 scanf("%d",&num);
346 for(j = 0; j < MAX_BOOK; j ++){
347 if(num == book[j].number)break;
348 }
349 if(j == MAX_BOOK){
350 printf("你输入的书号有误！！！");
351 }else{
352 printf("书号为：%d 书名为“%s”的图书成功删除！！！",book[j].number,book[j].bookName);
353 for(;j < MAX_BOOK-1; j ++){
354 book[j].num = book[j+1].num;
355 strcpy(book[j].bookName,book[j+1].bookName);
356 book[j].number = book[j+1].number;
357 }
358 MAX_BOOK--;
359 }
360 }else if(chioce == 2){
361 printf("请输入书名：");
362 char s[MAX];
363 scanf("%s",s);
364 for(j = 0; j < MAX_BOOK; j ++){
365 if(!strcmp(s,book[j].bookName))break;
366 }
367 if(j == MAX_BOOK){
368 printf("你输入的书名有误！！！");
369 }else{
370 printf("书号为：%d 书名为“%s”的图书成功删除！！！",book[j].number,book[j].bookName);
371 for(;j < MAX_BOOK-1; j ++){
372 book[j].num = book[j+1].num;
373 strcpy(book[j].bookName,book[j+1].bookName);
374 book[j].number = book[j].number;
375 }
376 MAX_BOOK--;
377 }
378 }
379 writeBook();
380 getchar();
381 }
382
383 void add(){ //添加图书
384 system("cls");
385 loadBook();
386 int num, numb;
387 char s[MAX];
388 printf("请输入书号：");
389 scanf("%d",&numb);
390 for(j = 0; j < MAX_BOOK; j ++){
391 if(numb == book[j].number){
392 printf("抱歉！您输入的书号已经存在！！！\n按任意键重新输入...");
393 getchar();
394 getchar();
395 add();
396 return;
397 }
398 }
399 printf("请输入是名：");
400 scanf("%s",s);
401 for(j = 0; j < MAX_BOOK; j ++){
402 if(!strcmp(s,book[j].bookName)){
403 printf("抱歉！您输入的书名已经存在！！！\n按任意键重新输入...");
404 getchar();
405 getchar();
406 add();
407 return;
408 }
409 }
410 printf("请输入书的数量：");
411 scanf("%d",&num);
412 book[MAX_BOOK].num = num;
413 book[MAX_BOOK].number = numb;
414 strcpy(book[MAX_BOOK].bookName,s);
415 MAX_BOOK++;
416 writeBook();
417 printf("书号为：%d\t书名为：%s\t数量为：%d 添加成功！！！",numb,s,num);
418 getchar();
419 }
420
421 void modify(){ //修改图书
422 loadBook();
423 system("cls");
424 int num, numb;
425 char s[MAX];
426 printf("请输入要修改图书的书号：");
427 scanf("%d",&num);
428 for(j = 0; j < MAX_BOOK; j ++){
429 if(num == book[j].number)break;
430 }
431 if(j == MAX_BOOK){
432 printf("您输入的书号不存在！！！\n任意键继续...");
433 getchar();
434 return;
435 }
436 printf("\n书号为：%d\t书名为：%s\t数量为：%d\n",book[j].number,book[j].bookName,book[j].num);
437 printf("\n请输入你要修改后的“书号”、“书名”和“数量”\n输入【0】退出\n");
438 int flag3 = 0;
439 while(1){
440 printf("\n【1】书号：");
441 scanf("%d",&numb);
442 if(numb == 0)return;
443 int m;
444 for(m = 0; m < MAX_BOOK; m ++){
445 if(numb == book[m].number){
446 flag3 = 1;
447 break;
448 }
449 }
450 if(flag3)printf("\n该书号已经存在了，请换一个！！！\n");
451 else break;
452 }
453 flag3 = 0;
454 while(1){
455 printf("\n【2】书名：");
456 scanf("%s",s);
457 if(!strcmp("0",s))return;
458 int m;
459 for(m = 0; m < MAX_BOOK; m ++){
460 if(!strcmp(s,book[m].bookName)){
461 flag3 = 1;
462 break;
463 }
464 }
465 if(flag3)printf("\n该书名已经存在了，请换一个！！！\n");
466 else break;
467 }
468 printf("\n【3】数量：");
469 scanf("%d",&num);
470 book[j].num = num;
471 book[j].number = numb;
472 strcpy(book[j].bookName,s);
473 printf("\n修改成功！！！");
474 writeBook();
475 getchar();
476 }
477
478 void show(){ //显示图书（分屏）
479 loadBook();
480 FILE *fp;
481 fp = fopen("book.txt","r+");
482 int l = 0;
483 while(fscanf(fp,"%d %s %d",&book[l].number,book[l].bookName,&book[l].num)!=EOF){
484 l++;
485 }
486 int con;
487 if(l != 0) printf("书号\t\t书名\t\t数量\n");
488 for(j = 0; j < l; j ++){
489 if(j%10 == 0 && j != 0){
490 printf("退出【1】\t下一页【2】\n请输入：");
491 scanf("%d",&con);
492 if(con == 1){
493 break;
494 }else continue;
495 }
496 printf("%d\t\t%s\t\t%d\n",book[j].number,book[j].bookName,book[j].num);
497 }
498 fclose(fp);
499 getchar();
500 }
501
502
503 //Starry
504 int main()
505 {
506 int choice, flag1 = 0;
507 do{
508 system("color A");
509 printf(" _______________________________________________ \n");
510 printf("|\t\t欢迎进入图书管理系统！\t\t|\n");
511 printf("|\t\t\t\t\t\t|\n");
512 printf("|\t\t\t\t\t\t|\n");
513 printf("|\t\t\t\t\t\t|\n");
514 printf("|\t注册【1】\t\t登入【2】\t|\n");
515 printf("|\t\t\t\t\t\t|\n");
516 printf("|\t\t\t\t\t\t|\n");
517 printf("|_______________________________________________|\n\n");
518 if(flag1)printf("\t\t请重新输入：");
519 else printf("\t\t请输入：");
520 scanf("%d",&choice);
521 if(choice == 1){
522 regist();
523 }else if(choice == 2){
524 login();
525 if(!flag){
526 printf("你已经输入超过三次了！！！");
527 exit(0);
528 }
529 }
530 flag1 = 1;
531 if(flag)break;
532 system("cls");
533 }while(1);
534 loadBor();
535 system("cls");
536 printf(" _______________________________________________ \n");
537 printf("|\t\t欢迎进入图书管理系统！\t\t|\n");
538 printf("|\t\t\t\t\t\t|\n");
539 printf("|\t\t\t\t\t\t|\n");
540 printf("|\t欢迎用户:\t%s\t\t\t|\n",stu[cnt].name);
541 printf("|\t当前借书信息是：\t\t\t|\n");
542 print();
543 printf("按任意键继续...");
544 getchar();
545 int flag2 = 1;
546 while(1){
547 getchar();
548 //Sleep(5000);
549 system("cls");
550 printFun();
551 if(flag2)printf("请选择：");
552 else printf("请从1-9中进行选择:"); /*再从1-13中进行选择*/
553 scanf("%d",&choice);
554 if(choice<1||choice>9){
555 flag2 = 0;
556 continue;
557 }else flag2 = 1;
558 switch(choice){
559 case 1: move(); //还书
560 break;
561 case 2: take(); //借书
562 break;
563 case 3: check(); //查询图书
564 break;
565 case 4: dele(); //删除图书
566 break;
567 case 5: add(); //添加图书
568 break;
569 case 6: modify(); //修改图书
570 break;
571 case 7: show(); //显示图书
572 break;
573 case 8: printFun(); //刷新界面
574 break;
575 case 9: exit(1); //退出
576 break;
577 default : break;
578 }
579 printf("按任意键继续...");
580 }
581 return 0;
582 }
时间： 2025-01-21 22:26:32