四则运算(判断正误)

一  功能要求:

      1、乘除可控

      2、随机添加括号

      3、输入结果判断正误

      4、统计正确数量

      5、正负,余数可控

      6、去除连除误区

二  设计思路

     判断对错就是将用户输入的数和正确的值相比较,正确输出√,错误输出×;

     统计个数就是设置两个全局变量,让它去统计对错的个数。

     至于其他的要求同以前编写的四则运算相同方法。

三  代码

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
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
//石家庄铁道大学
//2016.3.19
#include "stdio.h"
#include "stdlib.h"
#include "time.h"
int correct = 0;//声明全局变量correct
int wrong = 0;//声明全局变量wrong
int Add(int num1, int num2)
{
    int uresult, cresult;
    scanf_s("%d", &uresult);
    cresult = num1 + num2;
    if (cresult == uresult)
    {
        printf("\t√");
        correct++;
    }
    else
    {
        printf("\t×");
        wrong++;
    }
    return 0;
}
int Sub(int num1, int num2)
{
    int uresult, cresult;
    scanf_s("%d", &uresult);
    cresult = num1 - num2;
    if (cresult == uresult)
    {
        printf("\t√");
        correct++;
    }
    else
    {
        printf("\t×");
        wrong++;
    }
    return 0;
}
int Mult(int num1, int num2)
{
    int uresult, cresult;
    scanf_s("%d", &uresult);
    cresult = num1*num2;
    if (cresult == uresult)
    {
        printf("\t√");
        correct++;
    }
    else
    {
        printf("\t×");
        wrong++;
    }
    return 0;
}
int Divi(int num1, int num2)
{
    double uresult, cresult;
    scanf_s("%g", &uresult);
    cresult = num1 / num2;    //取整
    if (cresult == uresult)
    {
        printf("\t√");
        correct++;
    }
    else
    {
        printf("\t×");
        wrong++;
    }
    return 0;
}
int SetQuestion(int cheng, int number, int line, int plural, int scope, int konghang)
{
    int num1, num2, oper, i;
    srand(time(NULL));                //i为循环次数
    printf("我们提供一下功能:                  \n");
    printf("    1.题目的数值范围(暂不支持小数)\n");
    printf("    2.题目的数量                    \n");
    printf("    3.打印时每行题的数量            \n");
    printf("    4.答案中会不会出现负数的结果    \n");
    printf("    5.题目中是否会出现乘除运算      \n");
    printf("    6.打印时每行的间隔              \n");
    printf("请输入数值范围:");
    scanf_s("%d", &scope);
    printf("请选择出题数量:");
    scanf_s("%d", &number);                                   //oper为题目数量
    printf("请输入每行题的数量:");
    scanf_s("%d", &line);                                     //line为每行题的数量
    printf("答案是否有负数(1为有,0为没有):");
    scanf_s("%d", &plural);                                   //plural是否是负数
    while (plural != 0 && plural != 1)                          //判断用户是否按要求输入
    {
        printf("sorry!输入错误,请按要求输入:");
        scanf_s("%d", &plural);
    }
 
    printf("是否有乘除运算(1为有,0为没有):");
    scanf_s("%d", &cheng);
    while (cheng != 0 && cheng != 1)                          //判断用户是否按要求输入
    {
        printf("sorry!输入错误,请按要求输入:");
        scanf_s("%d", &cheng);
    }
    printf("中间有几个空行:");
    scanf_s("%d", &konghang);
    if (cheng == 1)
    {
        if (plural == 0)
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 4;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=\t", num1, num2);
                    break;
                case 1:
                    if (num1 >= num2)
                        printf("%d-%d=\t", num1, num2);
                    else
                        printf("%d-%d=\t", num2, num1);
                    break;
                case 2:
                    printf("%d*%d=\t", num1, num2);
                    break;
                case 3:
                    if (num2 == 0)
                        printf("%d/%d=\t", num2, num1);
                    else
                        printf("%d/%d=\t", num1, num2);
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                if (i%line == 0)
                {
                    for (int p = 1; p <= konghang; p++)
                    {
                        printf("\n");
                    }
                }
            }
 
        }
        else
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 4;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=\t", num1, num2);
                    break;
                case 1:
                    printf("%d-%d=\t", num1, num2);
                    break;
                case 2:
                    printf("%d*%d=\t", num1, num2);
                    break;
                case 3:
                    if (num2 == 0)
                        printf("%d/%d=\t", num2, num1);
                    else
                        printf("%d/%d=\t", num1, num2);
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                if (i%line == 0)
                {
                    for (int p = 1; p <= konghang; p++)
                    {
                        printf("\n");
                    }
                }
            }
        }
 
    }
    else
    {
        if (plural == 0)
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 2;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=\t", num1, num2);
                    break;
                case 1:
                    if (num1 >= num2)
                        printf("%d-%d=\t", num1, num2);
                    else
                        printf("%d-%d=\t", num2, num1);
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                if (i%line == 0)
                {
                    for (int p = 1; p <= konghang; p++)
                    {
                        printf("\n");
                    }
                }
            }
 
        }
        else
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 2;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=\t", num1, num2);
                    break;
                case 1:
                    printf("%d-%d=\t", num1, num2);
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                if (i%line == 0)
                {
                    for (int p = 1; p <= konghang; p++)
                    {
                        printf("\n");
                    }
                }
            }
        }
 
    }
    printf("\n");
 
    return 0;
}
 
int AnswerQuestion(int cheng, int number, int line, int plural, int scope, int konghang) {
    int num1, num2, oper, i;
    srand(time(NULL));
    //a,b为运算数,c为选择哪个运算符,i为循环次数
    printf("我们提供一下功能:                  \n");
    printf("    1.题目的数值范围(暂不支持小数)\n");
    printf("    2.题目的数量                    \n");
    printf("    3.答案中会不会出现负数的结果    \n");
    printf("    4.题目中是否会出现乘除运算      \n");
    printf("    5.打印时每行的间隔              \n");
    printf("请输入数值范围:");
    scanf_s("%d", &scope);
    printf("请选择出题数量:");
    scanf_s("%d", &number);
    printf("答案是否有负数(1为有,0为没有):");
    scanf_s("%d", &plural);                                   //plural是否是负数
    while (plural != 0 && plural != 1)                          //判断用户是否按要求输入
    {
        printf("sorry!输入错误,请按要求输入:");
        scanf_s("%d", &plural);
    }
 
    printf("是否有乘除运算(1为有,0为没有):");
    scanf_s("%d", &cheng);
    while (cheng != 0 && cheng != 1)                          //判断用户是否按要求输入
    {
        printf("sorry!输入错误,请按要求输入:");
        scanf_s("%d", &cheng);
    }
    printf("中间有几个空行:");
    scanf_s("%d", &konghang);
    if (cheng == 1)
    {
        if (plural == 0)
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 4;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=", num1, num2);
                    Add(num1, num2);
                    break;
                case 1:
                    if (num1 >= num2)
                    {
                        printf("%d-%d=", num1, num2);
                        Sub(num1, num2);
                    }
                    else
                    {
                        printf("%d-%d=", num2, num1);
                        Sub(num2, num1);
                    }
                    break;
                case 2:
                    printf("%d*%d=", num1, num2);
                    Mult(num1, num2);
                    break;
                case 3:
                    if (num2 == 0)
                    {
                        printf("%d/%d=", num2, num1);
                        Divi(num2, num1);
                    }
                    else
                    {
                        printf("%d/%d=", num1, num2);
                        Divi(num1, num2);
                    }
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                for (int p = 1; p <= konghang; p++)
                {
                    printf("\n");
                }
            }
 
        }
        else
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 4;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=", num1, num2);
                    Add(num1, num2);
                    break;
                case 1:
                    printf("%d-%d=", num1, num2);
                    Sub(num1, num2);
                    break;
                case 2:
                    printf("%d*%d=", num1, num2);
                    Mult(num1, num2);
                    break;
                case 3:
                    if (num2 == 0)
                    {
                        printf("%d/%d=", num2, num1);
                        Divi(num2, num1);
                    }
                    else
                    {
                        printf("%d/%d=", num1, num2);
                        Divi(num2, num1);
                    }
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
 
                for (int p = 1; p <= konghang; p++)
                {
                    printf("\n");
                }
            }
        }
 
    }
    else
    {
        if (plural == 0)
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 2;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=", num1, num2);
                    Add(num1, num2);
                    break;
                case 1:
                    if (num1 >= num2)
                    {
                        printf("%d-%d=", num1, num2);
                        Sub(num1, num2);
                    }
                    else
                    {
                        printf("%d-%d=", num2, num1);
                        Sub(num2, num1);
                    }
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                for (int p = 1; p <= konghang; p++)
                {
                    printf("\n");
                }
            }
 
        }
        else
        {
            for (i = 1; i <= number; i++)
            {
                num1 = rand() % scope;
                num2 = rand() % scope;
                oper = rand() % 2;
                printf("(%d)", i);
                switch (oper)
                {
                case 0:
                    printf("%d+%d=", num1, num2);
                    Add(num1, num2);
                    break;
                case 1:
                    printf("%d-%d=", num1, num2);
                    Sub(num1, num2);
                    break;
                default:
                {
                    printf("出错啦~~~");
                }
                }
                for (int p = 1; p <= konghang; p++)
                {
                    printf("\n");
                }
            }
        }
 
    }
    printf("\n");
 
    return 0;
}
void menu()
{
    printf("       欢迎使用四则运算出题系统     \n");
    printf("          1.    开始出题            \n");
    printf("          2.    开始答题            \n");
    printf("          0.    退出系统            \n");
}
int main()
{
    int cheng = 0, number = 0, line = 0, plural = 0;
    int scope = 0, konghang = 0, percent, a, num;
l1:    menu();
    printf("请选择(0-2):");
    scanf_s("%d", &a);
    switch (a)
    {
    case 1:
        SetQuestion(cheng, number, line, plural, scope, konghang);
        printf("是否继续(1为继续,0为不继续):");
        scanf_s("%d", &num);
        if (num == 1)
            goto l1;
        else
            printf("欢迎下次使用!\n");
        break;
    case 2:
        AnswerQuestion(cheng, number, line, plural, scope, konghang);
        printf("做对了%d道题\n", correct);
        printf("做错了%d道题\n", wrong);
        percent = correct / (correct + wrong);
        if (percent >= 6 / 10)
        {
            printf("你太棒了!!\n");
        }
        else
        {
            printf("不及格,你要加油啦~~~\n");
        }
        printf("是否继续(1为继续,0为不继续):");
        scanf_s("%d", &num);
        if (num == 1)
            goto l1;
        else
            printf("欢迎下次使用!\n");
        break;
    case 0:
        printf("欢迎下次使用!\n");
        break;
    }
 
    return 0;
}

 四  运行结果

 
 
五  合作伙伴
  孟西鑫 20133017  http://www.cnblogs.com/wanzitou/
 
 
六 总结
项目计划总结:
日期\任务 听课 编写程序 查阅资料 日总计
星期一 2   1 3
星期二   1 1 4
星期三   3   3
星期四 2 1   1
星期五   2   2
星期六        
星期日        
周总计 4 7 2 13
时间记录日志:
日期 开始时间  结束时间 中断时间 净时间(分钟) 活动 备注
3月14日 14:00 15:50 10 100 听课  
  19:00 20:00   60 查阅资料 和搭档一起讨论,着手改变程序与计划
3月15日 18:45 20:00   95 编写程序  
  20:00 21:00 15 45 讨论和查阅资料  
3月16日 13:00 16:00   180 编写代码  
3月17日 14:00 15:50 10 100 听课  
  19:00 20:00   60 编写程序  
3月18日 19:00 21:15 10 125 编写代码与测试  
缺陷记录日志:
日期 编号 引入阶段 排除阶段 修复时间&问题描述
3月16日 3 编码 编译

1h,逻辑错误,数组的题不能出现正确答案,循环搞错了

3月17日 4 编码 编译

30min:全局变量的定义放在了主函数中,导致系统不能识别;

30min:转换成vs2015中的scan语句不识别等语句错误

3月18日 5 编码 执行 调试 2h:个别特殊的临界情况未予顾及到,完善程序。
结语:
     程序大体上的功能还可以,但改进的空间还很大。
posted @   风影我爱罗  阅读(688)  评论(2编辑  收藏  举报
点击右上角即可分享
微信分享提示