文档 主要包含以下数据 账号信息:id, 密码,身份信息. 学生信息:id, 姓名,c 语言成绩,英语成绩,数学成绩,总成绩. 采用二进制文本的形式储存
实现有以下功能:
- 添加学生 (教师) 账号信息
- 浏览所有学生信息
- 按照指定 id 查询信息
- 修改指定 id 信息
- 删除指定 id 信息
- 修改密码
- 重置系统
扩展功能:
- 排序浏览
- 学生和账号信息分别存放在不同的文件中
- 把文件中的学生和账号信息导入的程序中
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
typedef struct Class {
long long id;
char name[10];
int cScore;
int mathScore;
int englishScore;
int allScore;
struct Class *next;
} Class;
typedef struct Identity {
long long id;
long long key;
int identity; ///1表示教师,0表示学生;
struct Identity *next;
} Identity;
void Show(char*);
void Print(Class *s) { ///对内容进行输出
printf(" %-10lld %-13s%-13d%-13d%-13d%-5d\n",s->id,s->name,s->cScore,s->mathScore,s->englishScore,s->allScore);
};
void Init(); ///系统重置
void GotoTeacher(long long,long long,Identity*,Class*); ///教师端
void GotuStudent(long long,long long,Identity*,Class*); ///学生端
void Admin(void*); ///管理员界面
void LogIn(); ///登录端口
void GotoXY(int,int); ///移动光标到输入栏
long long KeyIn(); ///密文输入
int LoadInformation(long long,long long); ///加载账号信息;
void SaveFile(void *,char*); ///存文件
void *readFile(char*); ///读取文件
void Add(Class*,Identity*,char*); ///添加
void Change(long long,void*,char*); ///修改
void *Find(long long id,void *head,char*func); ///查找(*->next即为查找到的数据)
void ViewAll(Class *); ///查看所有
void Delete(long long,Class*,Identity*,char*); ///删除
void Sort(Class*); ///排序
int main() {
LogIn();
return 0;
}
long long KeyIn() { ///密文输入****
char key[20], c;
int i = 0;
memset(key,0,sizeof(key));
while ((c = getch())!='\r') {
if(c != 8) {
key[i++] = c;
printf("*");
} else {
printf("\b \b");
}
}
key[i] = 0;
return atoll(key);
}
void GotoXY(int x,int y) { ///定位光标位置到指定坐标
HANDLE hOut;
hOut = GetStdHandle(STD_OUTPUT_HANDLE);
COORD pos= {x,y};
SetConsoleCursorPosition(hOut,pos);
}
void LogIn() { ///登录界面
long long id;
long long key;
while(1) {
Show("Login");
GotoXY(13,3);
scanf("%lld",&id);
GotoXY(13,5);
key = KeyIn();
LoadInformation(id,key);
}
}
int LoadInformation(long long id,long long key) {
Identity *accont = (Identity*)readFile("ACC");
Class *student = (Class*)readFile("STU");
Identity *p = accont;
Show("Load");
while(p = p->next) {
if(p->id == id&&p->key == key) {
if(p->identity)
GotoTeacher(id,key,accont,student);
else
GotuStudent(id,key,accont,student);
return 0;
}
}
long long superKey;
system("cls");
printf("┌────────────────────────────────────┐\n");
printf("│账号密码错误!!! │\n");
printf("│请输入管理员密码: │\n");
printf("└────────────────────────────────────┘\n");
GotoXY(19,2);
superKey = KeyIn();
if(superKey == SUPERKEY)
Admin(accont);
else {
getchar();
printf("\n\n密码错误!");
Sleep(2000);
}
system("cls");
return 1;
}
void ViewAll(Class *head) {
Class *p = head;
Show("splitter");
while(p = p->next)
Print(p);
}
void ViewAllAcc(Identity*head) {
Identity *p = head;
Show("splitter");
while(p = p->next)
printf("%10lld%10d\n",p->id,p->key);
}
void Add(Class *student,Identity*accont,char*func) {
Identity *addAccont = (Identity*)malloc(sizeof(Identity));
printf("请输入你要添加的id:\n");
if(strcmp(func,"STU")==0) {
Class *add = (Class*)malloc(sizeof(Class));
scanf("%lld",&add->id);
if(((Identity*)Find(add->id,accont,"ACC"))->next) {
printf("此id已存在\n");
free(add);
free(addAccont);
return;
}
printf("请输入该生名字:\n");
scanf("%s",add->name);
printf("请输入c成绩,数学成绩,英语成绩(以空格隔开)\n");
scanf("%d%d%d",&add->cScore,&add->mathScore,&add->englishScore);
add->allScore = add->cScore+add->mathScore+add->englishScore;
addAccont->id = add->id;
addAccont->key = 123456;
addAccont->identity = 0;
add->next = student->next;
student->next = add;
SaveFile(student,"STU");
} else {
scanf("%lld",&addAccont->id);
if(((Identity*)Find(addAccont->id,accont,"ACC"))->next) {
printf("此id已存在\n");
free(addAccont);
return;
}
printf("请输入该账号的初始密码:\n");
addAccont->key = KeyIn();
addAccont->identity = 1;
}
addAccont->next = accont->next;
accont->next = addAccont;
SaveFile(accont,"ACC");
}
void Change(long long id,void *head,char* func) {
if(strcmp(func,"STU")==0) {
Class *Cur = ((Class*)Find(id,head,"STU"))->next;
if(Cur) {
printf("请按照姓名,c语言成绩,数学成绩,英语成绩的格式输入(以空格隔开)\n");
scanf("%s%d%d%d",Cur->name,&Cur->cScore,&Cur->mathScore,&Cur->englishScore);
Cur->allScore = Cur->cScore + Cur->englishScore + Cur->mathScore;
} else
printf("查无此人\n");
SaveFile(head,"STU");
} else {
Identity *Cur = ((Identity*)Find(id,head,"ACC"))->next;
printf("请输入新密码:\n");
Cur->key = KeyIn();
printf("\n");
SaveFile(head,"ACC");
}
}
void Delete(long long id,Class*student,Identity*accont,char*func) {
if(strcmp(func,"STU")==0) {
Class *p = Find(id,student,"STU");
if(p->next) {
Class *r = p->next;
p->next = r->next;
free(r);
} else {
printf("操作有误\n");
return;
}
SaveFile(student,"STU");
}
Identity *p = Find(id,accont,"ACC");
if(p->next) {
if(p->identity==0) {
Class *r = p->next;
p->next = r->next;
free(r);
}
} else {
printf("操作有误\n");
}
SaveFile(accont,"ACC");
printf("成功!!!\n");
}
void *Find(long long id,void *head,char *func) {
if(strcmp(func,"STU")==0) {
Class *p = (Class*)head;
while(p->next&&p->next->id !=id)
p = p->next;
return p;
} else {
Identity *p = (Identity*)head;
while(p->next&&p->next->id !=id)
p = p->next;
return p;
}
}
void *readFile(char*func) {
FILE* fp;
if(strcmp(func,"STU")==0) {
Class *head = (Class*)malloc(sizeof(Class));
Class *p,*r = head;
head->next = NULL;
fp = fopen("student.txt", "ab+");
while(1) {
p=(Class*)malloc(sizeof(Class));
if(fread(p,sizeof(Class)-sizeof(Class*),1,fp)) {
r->next = p;
r = p;
} else
break;
}
r->next = NULL;
return head;
} else {
Identity *head = (Identity*)malloc(sizeof(Identity));
Identity *p,*r = head;
head->next = NULL;
fp = fopen("accont.txt", "ab+");
while(1) {
p=(Identity*)malloc(sizeof(Identity));
if(fread(p,sizeof(Identity)-sizeof(Identity*),1,fp)) {
r->next = p;
r = p;
} else
break;
}
r->next = NULL;
return head;
}
}
void SaveFile(void *head,char*func) {
FILE *fp;
if(strcmp(func,"STU")==0) {
fp = fopen("student.txt","wb");
Class* p = (Class*)head;
while(p = p->next)
fwrite(p,sizeof(*p)-sizeof(Class*),1,fp);
} else {
fp = fopen("accont.txt","wb");
Identity* p = (Identity*)head;
while(p = p->next)
fwrite(p,sizeof(*p)-sizeof(Identity*),1,fp);
}
fclose(fp);
}
void GotuStudent(long long id,long long key,Identity* accont,Class*student) { ///学生端
int input;
while(1) {
Show("student");
scanf("%d",&input);
switch(input) {
case 1:
Show("splitter");
Print(((Class*)(Find(id,student,"STU")))->next);
break;
case 2:
Change(id,accont,"ACC");
break;
case 3:
return;
default:
printf("输入有误");
}
system("pause");
}
}
void GotoTeacher(long long id,long long key,Identity*accont,Class*student) { ///教师端
while(1) {
Show("teacher");
int input;
scanf("%d",&input);
switch(input) {
case 1:
Add(student,accont,"STU");
break;
case 2:
Sort(student);
ViewAll(student);
break;
case 3: {
long long findId;
printf("请输入查询的id:\n");
scanf("%lld",&findId);
Class* find = ((Class*)Find(findId,student,"STU"))->next;
if(find) {
Show("splitter");
Print(find);
} else
printf("查无此人\n");
break;
}
case 4: {
long long changeId;
printf("请输入修改的id:\n");
scanf("%lld",&changeId);
Change(changeId,student,"STU");
}
break;
case 5: {
long long deleteId;
printf("请输入要删除的id:\n");
scanf("%lld",&deleteId);
Delete(deleteId,student,accont,"STU");
break;
}
case 6:
Change(id,accont,"ACC");
break;
case 7:
return;
default:
printf("输入错误,请重新输入\n");
Sleep(1000);
}
system("pause");
}
}
void Admin(void *head) {
while(1) {
system("cls");
Show("Admin");
int input;
scanf("%d",&input);
switch(input) {
case 1:
Add(NULL,head,"ACC");
break;
case 2: {
long long deleteId;
printf("请输入要删除的id:\n");
scanf("%lld",&deleteId);
Delete(deleteId,NULL,head,"ACC");
break;
}
case 3:
return;
case 4:
Init();
break;
default:
printf("输入有误\n");
}
system("pause");
}
}
void Show(char *func) {
system("cls");
if(strcmp(func,"splitter")==0) { ///Splitter
printf(" id 姓名 c语言成绩 数学成绩 英语成绩 总分\n");
printf("==========================================================================\n");
} else if(strcmp(func,"teacher")==0) { ///Teacher;
printf("┌───────────────────────────────────┐\n");
printf("│ 学生成绩管理系统 │\n");
printf("│ 教师端 │\n");
printf("│───────────────────────────────────│\n");
printf("│ 添加学生信息 -->1 │\n");
printf("│ 浏览所有学生信息 -->2 │\n");
printf("│ 查询学生信息 -->3 │\n");
printf("│ 修改学生信息 -->4 │\n");
printf("│ 删除学生信息 -->5 │\n");
printf("│ 修改密码 -->6 │\n");
printf("│ 退出系统 -->7 │\n");
printf("└───────────────────────────────────┘\n");
} else if(strcmp(func,"student")==0) {
printf("┌────────────────────────────────────┐\n");
printf("│──────────学生成绩管理系统──────────│\n");
printf("│────────────────────────────────────│\n");
printf("│ 查询自己成绩信息 -->1 │\n");
printf("│ 修改密码 -->2 │\n");
printf("│ 退出系统 -->3 │\n");
printf("└────────────────────────────────────┘\n");
} else if(strcmp(func,"Login")==0) {
printf("┌────────────────────────────────────┐\n");
printf("│──────────学生成绩管理系统──────────│\n");
printf("│────────────────────────────────────│\n");
printf("│请输入账号: │\n");
printf("│────────────────────────────────────│\n");
printf("│请输入密码: │ \n");
printf("└────────────────────────────────────┘\n");
} else if(strcmp(func,"Admin")==0) {
printf("┌───────────────────────────────────┐\n");
printf("│ 学生成绩管理系统 │\n");
printf("│ 管理员端 │\n");
printf("│───────────────────────────────────│\n");
printf("│ 添加教师账号 -->1 │\n");
printf("│ 删除教师账号 -->2 │\n");
printf("│ 退出系统 -->3 │\n");
printf("│ 重置系统 -->4 │\n");
printf("└───────────────────────────────────┘\n");
} else { ///Load
char loadR[] = {">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"};
char loadL[] = {"<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"};
const int leng = sizeof(loadR)/sizeof(char);
char *ploadR[leng+5],*ploadL[leng+5];
int i;
printf("\n\n");
for(i=0;i<leng;i++){
ploadR[i] = &loadR[i];
ploadL[i] = &loadL[i];
}
for(i=1;i <= leng; i++) {
printf("\r%50s Loading %3d%% %-50s",ploadL[leng-i],i*2,ploadR[leng-i]);
Sleep(40);
}
printf("\n");
}
}
void Init() { ///重置系统
printf("请注意,该操作将会清空系统内所有信息!\n");
Sleep(1000);
printf("1.执行\n2.不执行\n");
int flag;
scanf("%d",&flag);
if(flag==1) {
FILE *fin = fopen("student.txt","w");
FILE *fout = fopen("accont.txt","w");
fclose(fin);
fclose(fout);
printf("重置成功!\n");
Sleep(1000);
return;
} else if(flag==2)
return;
else
printf("输入有误,默认返回\n");
Sleep(1000);
return;
}
void Sort(Class* head) { ///冒泡,q,p为交换数据的前一个节点
Class* p = head,*q;
while(p->next){
q = p;
while(q = q->next){
if(q->next&& p->next->allScore > q->next->allScore){
Class *tmp = p->next;
p->next = q->next;
q->next = q->next->next;
p->next->next = tmp;
}
}
p = p->next;
}
}