四则运算的功能添加版02

  1 #include<iostream>
  2 #include<stdio.h>
  3 #include<time.h>
  4 #include<fstream>
  5 using namespace std;
  6 
  7 int main()
  8 {
  9     ofstream outfile;
 10     int i, a, b, c, d, e, f, g, l, m, o, x, y, z, count=0;
 11     double  finalnum = 0, cnum;
 12     int number, muldiv, rnum, numf, neg, rem; //muldiv判断乘除,rnum判断随机数,numf数值范围,neg判断有无负数,rem判断有无余数
 13     char psign, msign; //符号正负
 14     int bra, braran;      //bra判断是否有括号
 15     int num, signnum;  //num数字个数,signnum符号个数
 16     int numarray[20]; //szsz数字数组
 17     char fh[4] = { ‘+‘, ‘-‘, ‘*‘, ‘/‘ }, signarray[10];//fhsz符号数组
 18     cout << "请输入要打印的数量:";
 19     cin >> number;
 20     cout << "请输入数值范围：0-";
 21     cin >> numf;
 22     cout << "是否有括号：  1、有  2、无  ：";
 23     cin >> bra;
 24     cout << "加减有无负数： 1、有  2、无 :";
 25     cin >> neg;
 26     cout << "是否有乘除法： 1、有  2、无 :";
 27     cin >> muldiv;
 28     if (muldiv == 1)
 29     {
 30         cout << "除法有无余数: 1、有  2、无 :";
 31         cin >> rem;
 32     }
 33     srand((unsigned)time(NULL));//时间种子，每次出现随机数不同
 34 
 35     if (bra == 1)     //判断是否有括号
 36     {
 37         braran = 3;
 38     }
 39     if (bra == 2)
 40     {
 41         braran = 2;
 42     }
 43 
 44     if (muldiv == 1)           //判断是否有乘除
 45     {
 46         rnum = 4;
 47     }
 48     if (muldiv == 2)
 49     {
 50         rnum = 2;
 51     }
 52     for (i = 0; i < number; i++)
 53     {
 54 
 55         a = rand() % numf;
 56         b = rand() % numf;
 57         e = rand() % numf;
 58         f = rand() % numf;
 59         if (neg == 1)
 60         {
 61             l = rand() % 2;
 62             m = rand() % 2;
 63             if (l == 0)          //加减有负数时，随机生成正负号
 64             {
 65                 psign = ‘-‘;
 66             }
 67             if (l == 1)
 68             {
 69                 psign = ‘ ‘;
 70             }
 71             if (m == 0)
 72             {
 73                 msign = ‘-‘;
 74             }
 75             if (m == 1)
 76             {
 77                 msign = ‘ ‘;
 78             }
 79         }
 80         else
 81         {
 82             psign = msign = ‘ ‘;
 83         }
 84         switch (d = rand() % braran)
 85         {
 86         case 0:   //整数
 87         {
 88             switch (c = rand() % rnum)
 89             {
 90             case 0:cout << psign << a << "+" << msign << b << "=" << endl;
 91                 cnum = a + b;
 92                 cin >> finalnum;
 93                 if (psign == ‘ ‘&&msign == ‘ ‘)
 94                 {
 95                     cnum = a + b;
 96                 }
 97                 if (psign == ‘-‘&&msign == ‘ ‘)
 98                 {
 99                     cnum = b - a;
100                 }
101                 if (psign == ‘ ‘&&msign == ‘-‘)
102                 {
103                     cnum = a - b;
104                 }
105                 if (psign == ‘-‘&&msign == ‘-‘)
106                 {
107                     cnum = -a - b;
108                 }
109                 if (int(finalnum * 100) == int(cnum * 100))
110                 {
111                     cout << "答案正确！" << endl;
112                     count++;
113                 }
114                 else
115                 {
116                     cout << "答案错误！" << endl;
117                     cout << "正确答案为：" << cnum << endl;
118                 }
119                 break;
120             case 1:cout << psign << a << "-" << msign << b << "=" << endl;
121                 cnum = a - b;
122                 cin >> finalnum;
123                 if (psign == ‘ ‘&&msign == ‘ ‘)
124                 {
125                     cnum = a  -  b ;
126                 }
127                 if (psign == ‘-‘&&msign == ‘ ‘)
128                 {
129                     cnum = -b - a ;
130                 }
131                 if (psign == ‘ ‘&&msign == ‘-‘)
132                 {
133                     cnum = a  + b ;
134                 }
135                 if (psign == ‘-‘&&msign == ‘-‘)
136                 {
137                     cnum = -a  + b ;
138                 }
139                 if (int(finalnum*100) ==int (cnum*100))
140                 {
141                     cout << "答案正确！" << endl;
142                     count++;
143                 }
144                 else
145                 {
146                     cout << "答案错误！" << endl;
147                     cout << "正确答案为：" << cnum << endl;
148                 }
149                 break;
150             case 2:cout << a << "×" << b << "=" << endl;
151                 cnum = a * b;
152                 cin >> finalnum;
153                 if (int(finalnum * 100) == int(cnum * 100))
154                 {
155                     cout << "答案正确！" << endl;
156                     count++;
157                 }
158                 else
159                 {
160                     cout << "答案错误！" << endl;
161                     cout <<"正确答案为："<< cnum << endl;
162                 }
163                 break;
164             case 3:
165             {
166                 if (rem == 2)
167                 {
168                     while (b == 0)
169                     {
170                         b = rand() % numf;
171                     }
172                     o = a%b;
173                     while (o != 0)
174                     {
175                         b = rand() % numf;
176                         while (b == 0)
177                         {
178                             a = rand() % numf;
179                             b = rand() % numf;
180                         }
181                         o = a%b;
182                     }
183                 }
184                 else
185                 {
186                     while (b == 0)
187                     {
188                         b = rand() % numf;
189                     }
190                 }
191                 cout << a << "÷" << b << "=" << endl;
192                 cnum = a / b;
193                 cin >> finalnum;
194                 if (int(finalnum * 100) == int(cnum * 100))
195                 {
196                     cout << "答案正确！" << endl;
197                     count++;
198                 }
199                 else 
200                 {
201                     cout << "答案错误！" << endl;
202                     cout << "正确答案为：" << cnum << endl;
203                 }
204             }break;
205             }
206         } break;
207         case 1://真分数
208         {
209             while (a == 0 || b == 0 || a >= b)
210             {
211                 a = rand() % numf;
212                 b = rand() % numf;
213 
214             }
215             while (e == 0 || f == 0 || e >= f)
216             {
217                 e = rand() % numf;
218                 f = rand() % numf;
219             }
220             switch (g = rand() % rnum)
221             {
222             case 0: 
223             {
224                 cout << psign << a << "/" << b << "+" << msign << e << "/" << f << "=" << endl;
225                 cin >> finalnum;
226                 if (psign == ‘ ‘&&msign == ‘ ‘)
227                 {
228                     cnum = a / double (b) + e / double(f);
229                 }
230                 if (psign == ‘-‘&&msign == ‘ ‘)
231                 {
232                     cnum = e / double(f) - a / double (b);
233                 }
234                 if (psign == ‘ ‘&&msign == ‘-‘)
235                 {
236                     cnum = a / double (b) - e / double(f);
237                 }
238                 if (psign == ‘-‘&&msign == ‘-‘)
239                 {
240                     cnum = -a / double(b) - e / double(f);
241                 }
242                 if (int(finalnum * 100) == int(cnum * 100))
243                 {
244                     cout << "答案正确！" << endl;
245                     count++;
246                 }
247                 else
248                 {
249                     cout << "答案错误！" << endl;
250                     cout << "正确答案为：" << cnum << endl;
251                 }
252                 break;
253             }
254             case 1:
255             {
256                 cout << psign << a << "/" << b << "-" << msign << e << "/" << f << "=" << endl;
257                 cin >> finalnum;
258                 if (psign == ‘ ‘&&msign == ‘ ‘)
259                 {
260                     cnum = a / double(b) - e / double(f);
261                 }
262                 if (psign == ‘-‘&&msign == ‘ ‘)
263                 {
264                     cnum = -(e / double(f)) - (a / double(b));
265                 }
266                 if (psign == ‘ ‘&&msign == ‘-‘)
267                 {
268                     cnum = (a / double(b)) + (e / double(f));
269                 }
270                 if (psign == ‘-‘&&msign == ‘-‘)
271                 {
272                     cnum = -(a / double(b)) + (e / double(f));
273                 }
274                 if (int(finalnum * 100) == int(cnum * 100))
275                 {
276                     cout << "答案正确！" << endl;
277                     count++;
278                 }
279                 else
280                 {
281                     cout << "答案错误！" << endl;
282                     cout << "正确答案为：" << cnum << endl;
283                 }
284                 break;
285             }cout << "一共答对了：" << count << "题" << endl;
286             case 2:
287             {
288                 cout << a << "/" << b << "×" << e << "/" << f << "=" << endl;
289                 cnum = (a / double(b)) * (e / double(f));
290                 cin >> finalnum;
291                 if (int(finalnum * 100) == int(cnum * 100))
292                 {
293                     cout << "答案正确！" << endl;
294                     count++;
295                 }
296                 else
297                 {
298                     cout << "答案错误！" << endl;
299                     cout << "正确答案为：" << cnum << endl;
300                 }
301                 break;
302             }
303             case 3: 
304             {
305                 cout << a << "/" << b << "÷" << e << "/" << f << "=" << endl;
306                 cnum = (a / double(b)) / (e / double(f));
307                 cin >> finalnum;
308                 if (int(finalnum * 100) == int(cnum * 100))
309                 {
310                     cout << "答案正确！" << endl;
311                     count++;
312                 }
313                 else
314                 {
315                     cout << "答案错误！" << endl;
316                     cout << "正确答案为：" << cnum << endl;
317                 }
318             }
319             } break;
320         } break;
321         case 2:
322         {
323             num = 3 + rand() % 8;     //有括号时，数字和符号数组
324             signnum = num - 1;
325             for (y = 0; y < num; y++)
326             {
327                 numarray[y] = rand() % numf;
328             }
329             for (y = 0; y < signnum; y++)
330             {
331                 x = rand() % 4;
332                 signarray[y] = fh[x];
333             }
334             signarray[signnum] = ‘=‘;
335             switch (z = signnum % 2)
336             {
337             case 0:
338             {
339                 cout << numarray[0];
340                 cout << signarray[0];
341                 finalnum =finalnum+numarray[0];
342                 for (y = 1; y < signnum; y++)
343                 {
344                     cout << "(";
345                     cout << numarray[y];
346                     cout << signarray[y];
347                     cout << numarray[y + 1];
348                     cout << ")";
349                     switch (y)
350                     {
351                         case‘+‘:finalnum = finalnum + numarray[y] + numarray[y + 1]; break;
352                         case‘-‘:finalnum = finalnum + numarray[y] - numarray[y + 1]; break;
353                         case‘*‘:finalnum = finalnum + numarray[y] * numarray[y + 1]; break;
354                         case‘/‘:finalnum = finalnum + numarray[y] / numarray[y + 1]; break;
355                     }
356                     cout << signarray[y + 1];
357                     y = y + 1;
358                 }cout << endl;
359             }break;
360             case 1:
361             {
362                 for (y = 0; y < signnum; y++)
363                 {
364                     cout << "(";
365                     cout << numarray[y];
366                     cout << signarray[y];
367                     cout << numarray[y + 1];
368                     cout << ")";
369                     switch (y)
370                     {
371                         case‘+‘:finalnum = finalnum + numarray[y] + numarray[y + 1]; break;
372                         case‘-‘:finalnum = finalnum + numarray[y] - numarray[y + 1]; break;
373                         case‘*‘:finalnum = finalnum + numarray[y] * numarray[y + 1]; break;
374                         case‘/‘:finalnum = finalnum + numarray[y] / numarray[y + 1]; break;
375                     }
376                     cout << signarray[y + 1];
377                     y = y + 1;
378                 }
379                 cout << endl;
380                 cin >> finalnum;
381                 if (int(finalnum * 100) == int(cnum * 100))
382                 {
383                     cout << "答案正确！" << endl;
384                     count++;
385                 }
386                 else
387                     cout << "答案错误！" << endl;
388                     cout << "正确答案为：" << cnum << endl;
389             }break;
390             }
391         } break;
392         }
393     }
394     cout << "一共答对了：" << count << "题" << endl;
395 }