1 #include <stdio.h>
2 #include<stdlib.h>
3 #include<string.h>
4
5 typedef struct student {
6 int number;
7 char name[20];
8 char faculty[50];
9 char classes[20];
10 struct student * link;
11 }STU;
12
13 STU * CreateLink();
14 void WriteLink(STU *);
15
16 void input();
17 void del();
18 void del_number(STU *);
19 void del_name(STU *);
20 void del_faculty(STU *);
21 void del_classes(STU *);
22 void search();
23 void search_number(STU *);
24 void search_name(STU *);
25 void search_faculty(STU *);
26 void search_classes(STU *);
27 void sort();
28 void show();
29 void edit();
30
31
32 void main()
33 {
34 char c;
35 FILE * fp;
36
37 if((fp=fopen("student.dat","r"))==NULL)
38 {
39 fp=fopen("student.dat","w");
40 fclose(fp);
41 }
42
43 do
44 {
45 system("cls");
46 printf("\n\n\n");
47 printf("\t\t╔═════════════════════╗\n");
48 printf("\t\t║ ║\n");
49 printf("\t\t║ 1: 添加一个学生 ║\n");
50 printf("\t\t║ 2: 删除一个学生 ║\n");
51 printf("\t\t║ 3: 查找一个学生 ║\n");
52 printf("\t\t║ 4: 学生信息排序 ║\n");
53 printf("\t\t║ 5: 修改学生信息 ║\n");
54 printf("\t\t║ 6: 查看学生信息 ║\n");
55 printf("\t\t║ 9: 退出 ║\n");
56 printf("\t\t║ ║\n");
57 printf("\t\t╚═════════════════════╝\n");
58 printf("\t\t \n");
59 printf("\t\t请选择输入选项[1\\2\\3\\4\\5\\6\\9]:> ");
60 do
61 {
62 c=getchar();
63 }while(c!='1'&&c!='2'&&c!='3'&&c!='4'&&c!='5'&&c!='6'&&c!='9');
64 getchar();
65
66 switch(c)
67 {
68 case '1': input(); break;
69 case '2': del(); break;
70 case '3': search(); break;
71 case '4': sort(); break;
72 case '5': edit(); break;
73 case '6': show(); break;
74 case '9': exit(0);
75 }
76 system("cls");
77 }while(1);
78 }
79
80 STU * CreateLink()
81 {
82 FILE *fp;
83 STU * head,*p1, *p2;
84
85 if((fp=fopen("student.dat","r"))==NULL)
86 {
87 printf("打开文件错误，退出。");
88 exit(1);
89 }
90 head=p1=p2=(STU *)malloc(sizeof(STU));
91 while(!feof(fp))
92 {
93 if(fscanf(fp,"%d %s %s %s\n",&p2->number,p2->name,p2->faculty,p2->classes)==EOF)
94 {
95 free(head);
96 return NULL;
97 }
98 p1->link=p2;
99 p1=p2;
100 p2=(STU *)malloc(sizeof(STU));
101 }
102 p1->link=NULL;
103 free(p2);
104 fclose(fp);
105
106 return head;
107 }
108
109 void WriteLink(STU * p2)
110 {
111 FILE *fp;
112
113 if((fp=fopen("student.dat","w"))==NULL)
114 {
115 printf("打开文件错误，退出。");
116 exit(1);
117 }
118 while(p2!=NULL)
119 {
120 fprintf(fp,"%d %s %s %s\n",p2->number,p2->name,p2->faculty,p2->classes);
121 p2=p2->link;
122 }
123 fclose(fp);
124 }
125
126 void input()
127 {
128 STU * head, *p1, *p2;
129 system("cls");
130
131 head=CreateLink();
132 p1=head;
133
134 if(p1!=NULL)
135 while(p1->link!=NULL)
136 p1=p1->link;
137
138 p2=p1;
139 printf("\n\n\n\t\t输入待添加学生(-1 结束)：\n");
140 while(1)
141 {
142 p2=(STU *)malloc(sizeof(STU));
143 if(p1==NULL) head=p1=p2;
144 printf("输入学号：");
145 scanf("%d",&p2->number);
146 if(p2->number==-1) break;
147 printf("输入 姓名、系别、班级：");
148 scanf("%s%s%s",p2->name,p2->faculty,p2->classes);
149 p1->link=p2;
150 p1=p2;
151 }
152 p1->link=NULL;
153 free(p2);
154
155 WriteLink(head);
156
157 free(head);
158 }
159
160 void del()
161 {
162 STU * head=CreateLink();
163 char c;
164 do
165 {
166 system("cls");
167 printf("\n\n\n");
168 printf("\t\t╔═════════════════════╗\n");
169 printf("\t\t║ ║\n");
170 printf("\t\t║ 请输入删除内容： ║\n");
171 printf("\t\t║ ║\n");
172 printf("\t\t║ 1: 按照学号删除 ║\n");
173 printf("\t\t║ 2: 按照姓名删除 ║\n");
174 printf("\t\t║ 3: 按照系别删除 ║\n");
175 printf("\t\t║ 4: 按照班级删除 ║\n");
176 printf("\t\t║ 9: 返回主菜单 ║\n");
177 printf("\t\t║ ║\n");
178 printf("\t\t╚═════════════════════╝\n");
179 printf("\t\t \n");
180 printf("\t\t请选择输入选项[0\\1\\2\\3\\4\\9]:> ");
181 do
182 {
183 c=getchar();
184 }while(c!='1'&&c!='2'&&c!='3'&&c!='4'&&c!='9');
185 getchar();
186
187 switch(c)
188 {
189 case '1': del_number(head); break;
190 case '2': del_name( head); break;
191 case '3': del_faculty(head); break;
192 case '4': del_classes(head); break;
193 case '9': return;
194 }
195 printf("\t\t按任意键返回主菜单:\n");
196 getchar();
197 system("cls");
198 }while(1);
199
200 free(head);
201 }
202 void del_number(STU * head)
203 {
204 STU * p1, *p2, temp;
205 system("cls");
206 do
207 {
208 printf("\n\n\n\t\t输入要删除学生学号(-1 结束)：");
209 scanf("%d",&temp.number);
210 getchar();
211 p1=p2=head;
212 while(p2!=NULL)
213 {
214 if(head->number==temp.number)
215 {
216 head=head->link;
217 p1->link=NULL;
218 free(p1);
219 p1=p2=head;
220 }
221 else
222 {
223 if(p2->number==temp.number)
224 {
225 p1->link=p2->link;
226 p2->link=NULL;
227 free(p2);
228 p2=p1;
229 }
230 p1=p2;
231 p2=p2->link;
232 }
233 }
234 }while(temp.number!=-1);
235 WriteLink(head);
236 }
237 void del_name(STU * head)
238 {
239 STU * p1, *p2, temp;
240 system("cls");
241 do
242 {
243 printf("\n\n\n\t\t输入要删除学生姓名(EOF 结束)：");
244 if(scanf("%s",temp.name)==EOF) break;
245 getchar();
246 p1=p2=head;
247 while(p2!=NULL)
248 {
249 if(strcmp(head->name,temp.name)==0)
250 {
251 head=head->link;
252 p1->link=NULL;
253 free(p1);
254 p1=p2=head;
255 }
256 else
257 {
258 if(strcmp(head->name,temp.name)==0)
259 {
260 p1->link=p2->link;
261 p2->link=NULL;
262 free(p2);
263 p2=p1;
264 }
265 p1=p2;
266 p2=p2->link;
267 }
268 }
269 }while(1);
270 WriteLink(head);
271 }
272 void del_faculty(STU * head)
273 {
274 STU * p1, *p2, temp;
275 system("cls");
276 do
277 {
278 printf("\n\n\n\t\t输入要删除学生系别(EOF 结束)：");
279 if(scanf("%s",temp.faculty)==EOF) break;
280 getchar();
281 p1=p2=head;
282 while(p2!=NULL)
283 {
284 if(strcmp(head->faculty,temp.faculty)==0)
285 {
286 head=head->link;
287 p1->link=NULL;
288 free(p1);
289 p1=p2=head;
290 }
291 else
292 {
293 if(strcmp(head->faculty,temp.faculty)==0)
294 {
295 p1->link=p2->link;
296 p2->link=NULL;
297 free(p2);
298 p2=p1;
299 }
300 p1=p2;
301 p2=p2->link;
302 }
303 }
304 }while(1);
305 WriteLink(head);
306 }
307 void del_classes(STU * head)
308 {
309 STU * p1, *p2, temp;
310 system("cls");
311 do
312 {
313 printf("\n\n\n\t\t输入要删除学生班级(EOF 结束)：");
314 if(scanf("%s",temp.classes)==EOF) break;
315 getchar();
316 p1=p2=head;
317 while(p2!=NULL)
318 {
319 if(strcmp(head->classes,temp.classes)==0)
320 {
321 head=head->link;
322 p1->link=NULL;
323 free(p1);
324 p1=p2=head;
325 }
326 else
327 {
328 if(strcmp(head->classes,temp.classes)==0)
329 {
330 p1->link=p2->link;
331 p2->link=NULL;
332 free(p2);
333 p2=p1;
334 }
335 p1=p2;
336 p2=p2->link;
337 }
338 }
339 }while(1);
340 WriteLink(head);
341 }
342
343 void search()
344 {
345 STU * head=CreateLink();
346
347 char c;
348 do
349 {
350 system("cls");
351 printf("\n\n\n");
352 printf("\t\t╔═════════════════════╗\n");
353 printf("\t\t║ ║\n");
354 printf("\t\t║ 请输入查找内容： ║\n");
355 printf("\t\t║ ║\n");
356 printf("\t\t║ 1: 按照学号查找 ║\n");
357 printf("\t\t║ 2: 按照姓名查找 ║\n");
358 printf("\t\t║ 3: 按照系别查找 ║\n");
359 printf("\t\t║ 4: 按照班级查找 ║\n");
360 printf("\t\t║ 9: 返回主菜单 ║\n");
361 printf("\t\t║ ║\n");
362 printf("\t\t╚═════════════════════╝\n");
363 printf("\t\t \n");
364 printf("\t\t请选择输入选项[0\\1\\2\\3\\4\\9]:> ");
365 do
366 {
367 c=getchar();
368 }while(c!='1'&&c!='2'&&c!='3'&&c!='4'&&c!='9');
369 getchar();
370
371 switch(c)
372 {
373 case '1': search_number(head); break;
374 case '2': search_name( head); break;
375 case '3': search_faculty(head); break;
376 case '4': search_classes(head); break;
377 case '9': return;
378 }
379 printf("\t\t按任意键返回主菜单:\n");
380 getchar();
381 system("cls");
382 }while(1);
383 }
384 void search_number(STU * head)
385 {
386 STU temp,*p2=head;
387 system("cls");
388
389 do
390 {
391 printf("\n\n\n\t\t输入要查找学生学号(-1 结束)：\n\t\t");
392 scanf("%d",&temp.number);
393 printf("\t\t查询结果：\n");
394 while(p2!=NULL)
395 {
396 if(p2->number==temp.number)
397 printf("\t\t%d %s %s %s",p2->number,p2->name,p2->faculty,p2->classes);
398 p2=p2->link;
399 }
400 p2=head;
401 }while(temp.number!=-1);
402
403 }
404 void search_name(STU * head)
405 {
406 STU temp, *p2=head;
407 system("cls");
408
409 printf("\n\n\n\t\t输入要查找学生姓名(EOF 结束)：\n\t\t");
410 do
411 {
412 if(scanf("%s",temp.name)==EOF) return;
413 printf("\t\t查询结果：\n");
414 while(p2!=NULL)
415 {
416 if(strcmp(p2->name,temp.name)==0)
417 printf("\t\t%d %s %s %s\n\t\t",p2->number,p2->name,p2->faculty,p2->classes);
418 p2=p2->link;
419 }
420 p2=head;
421 getchar();
422 printf("\n\n\n\t\t输入要查找学生姓名(EOF 结束)：\n\t\t");
423 }while(1);
424 }
425 void search_faculty(STU * head)
426 {
427 STU temp, *p2=head;
428 system("cls");
429
430 printf("\n\n\n\t\t输入要查找学生系别(EOF 结束)：\n\t\t");
431 do
432 {
433 if(scanf("%s",temp.faculty)==EOF) return;
434 printf("\t\t查询结果：\n");
435 while(p2!=NULL)
436 {
437 if(strcmp(p2->faculty,temp.faculty)==0)
438 printf("\t\t%d %s %s %s\n\t\t",p2->number,p2->name,p2->faculty,p2->classes);
439 p2=p2->link;
440 }
441 p2=head;
442 getchar();
443 printf("\n\n\n\t\t输入要查找学生系别(EOF 结束)：\n\t\t");
444 }while(1);
445 }
446 void search_classes(STU * head)
447 {
448 STU temp, *p2=head;
449 system("cls");
450
451 printf("\n\n\n\t\t输入要查找学生班级(EOF 结束)：\n\t\t");
452 do
453 {
454 if(scanf("%s",temp.classes)==EOF) return;
455 printf("\t\t查询结果：\n");
456 while(p2!=NULL)
457 {
458 if(strcmp(p2->classes,temp.classes)==0)
459 printf("\t\t%d %s %s %s\n\t\t",p2->number,p2->name,p2->faculty,p2->classes);
460 p2=p2->link;
461 }
462 p2=head;
463 getchar();
464 printf("\n\n\n\t\t输入要查找学生班级(EOF 结束)：\n\t\t");
465 }while(1);
466 }
467
468 void sort()
469 {
470 STU * head, *p1, *p2;
471 STU temp;
472
473 head=CreateLink();
474
475 system("cls");
476 printf("\n\n\n\t\t按照学号排序（正序）：\n"); //常排序
477 for(p1=head;p1!=NULL;p1=p1->link)
478 for(p2=p1->link;p2!=NULL;p2=p2->link)
479 if(p1->number>p2->number)
480 {
481 temp.number=p1->number;
482 strcpy(temp.name,p1->name);
483 strcpy(temp.faculty,p1->faculty);
484 strcpy(temp.classes,p1->classes);
485 p1->number=p2->number;
486 strcpy(p1->name,p2->name);
487 strcpy(p1->faculty,p2->faculty);
488 strcpy(p1->classes,p2->classes);
489 p2->number=temp.number;
490 strcpy(p2->name,temp.name);
491 strcpy(p2->faculty,temp.faculty);
492 strcpy(p2->classes,temp.classes);
493 }
494
495 WriteLink(head);
496
497 printf("\t\t排序完毕，输出排序结果：");
498 show();
499 free(head);
500 }
501
502 void show()
503 {
504 STU * head, *p2;
505
506 head=CreateLink();
507
508 printf("\n\n\n\t\t学号 姓名 系别 班级:\n");
509 p2=head;
510 while(p2!=NULL)
511 {
512 printf("\t\t%d %s %s %s\n",p2->number,p2->name,p2->faculty,p2->classes);
513 p2=p2->link;
514 }
515 getchar();
516 }
517
518 void edit()
519 {
520 STU * head, *p2;
521 STU temp;
522 head=CreateLink();
523 p2=head;
524
525 system("cls");
526 do
527 {
528 printf("\n\n\n\t\t输入要查找学生学号(-1 结束)：\n");
529 scanf("%d",&temp.number);
530 getchar();
531 while(p2!=NULL)
532 {
533 if(p2->number==temp.number)
534 {
535 printf("请输入修改后的内容：姓名、系别、班级：\n");
536 scanf("%s %s %s",p2->name,p2->faculty,p2->classes);
537 }
538 p2=p2->link;
539 }
540 }while(temp.number!=-1);
541
542 WriteLink(head);
543 free(head);
544 }
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