四则运算2+psp0级表格

  1 // 1_1.cpp : 定义控制台应用程序的入口点。
  2 //
  3 /*四则运算二*/
  4 
  5 #include "stdafx.h"
  6 #include "iostream"
  7 #include "stdlib.h"
  8 #include "time.h"
  9 #include "iomanip"
 10 #include "String"
 11 using namespace std;
 12 
 13 
 14 /*加减法定义*/
 15 void add(string judge,int min,int max)
 16 {
 17     /*定义a,b,c分别表示产生的随机数和运算符*/
 18     int a,b,c;
 19     a=(rand() % (max-min+1))+ min;                        //随机生成范围内的整数
 20     b=(rand() % (max-min+1))+ min;
 21     c=rand()%2;
 22     /*设置右对齐*/
 23     cout.flags(ios::right);
 24     if(judge=="Y"||judge=="y")                          //允许负数
 25     {
 26         switch(c)
 27         {
 28         case 0:
 29             cout<<setw(4)<<a<<‘+‘<<b<<‘=‘;
 30             break;
 31         case 1:
 32             cout<<setw(4)<<a<<‘-‘<<b<<‘=‘;
 33             break;
 34         }
 35     }
 36     else                                //不允许负数
 37     {
 38         switch(c)
 39         {
 40         case 0:
 41             cout<<setw(4)<<a<<‘+‘<<b<<‘=‘;
 42             break;
 43         case 1:
 44             if(a>=b)
 45                 cout<<setw(4)<<a<<‘-‘<<b<<‘=‘;
 46             else
 47                 cout<<setw(4)<<b<<‘-‘<<a<<‘=‘;
 48             break;
 49         }
 50     }
 51 }
 52 /*四则运算定义*/
 53 void addmult(string judge1,string judge2,int min,int max)
 54 {
 55     int a,b,c;
 56     a=(rand() % (max-min+1))+ min;                        //随机生成范围内的整数
 57     b=(rand() % (max-min+1))+ min;
 58     c=rand()%4;
 59     /*设置右对齐*/
 60     cout.flags(ios::right);
 61     if((judge1=="Y"||judge1=="y"))                            //允许假分数
 62     {
 63         switch(c)                                            //随机产生运算符
 64         {
 65         case 0:
 66             cout<<setw(4)<<a<<‘+‘<<b<<‘=‘;
 67             break;
 68         case 1:
 69             if(judge2=="Y"||judge2=="y")                    //允许负数结果出现
 70             {
 71                 cout<<setw(4)<<a<<‘-‘<<b<<‘=‘;
 72             }
 73             else
 74             {
 75                 if(a>=b)
 76                      cout<<setw(4)<<a<<‘-‘<<b<<‘=‘;
 77                 else
 78                     cout<<setw(4)<<b<<‘-‘<<a<<‘=‘;
 79             }
 80             break;
 81         case 2:
 82             cout<<setw(4)<<a<<‘*‘<<b<<‘=‘;
 83             break;
 84         case 3:                                                //判断生成除法的条件，除数不能为零
 85             if(a!=0&&b==0)
 86                 cout<<setw(4)<<b<<‘/‘<<a<<‘=‘;
 87             else if(a==0&&b!=0)
 88                 cout<<setw(4)<<a<<‘/‘<<b<<‘=‘;
 89             else if(a==0&&b==0)
 90                 cout<<setw(4)<<a<<‘/‘<<b+1<<‘=‘;
 91             else
 92                 cout<<setw(4)<<a<<‘/‘<<b<<‘=‘;
 93             break;
 94         }
 95     }
 96     else                                            //不允许假分数出现
 97     {
 98         switch(c)
 99         {
100         case 0:
101             cout<<setw(4)<<a<<‘+‘<<b<<‘=‘;
102             break;
103         case 1:
104             if(judge2=="Y"||judge2=="y")                    //允许负数结果出现
105             {
106                 cout<<setw(4)<<a<<‘-‘<<b<<‘=‘;
107             }
108             else
109             {
110                 if(a>=b)
111                      cout<<setw(4)<<a<<‘-‘<<b<<‘=‘;
112                 else
113                     cout<<setw(4)<<b<<‘-‘<<a<<‘=‘;
114             }
115             break;
116         case 2:
117             cout<<setw(4)<<a<<‘*‘<<b<<‘=‘;
118             break;
119         case 3:                             //真分数判断
120             if(a<=b&&b!=0)
121                 cout<<setw(4)<<a<<‘/‘<<b<<‘=‘;
122             else 
123                 cout<<setw(4)<<b<<‘/‘<<a<<‘=‘;
124             break;
125         }
126     }
127 }
128 /*四则运算生成函数*/
129 void math(int m,int n)
130 {
131     int min,max,row,line;
132     string judge1,judge2,judge3;                                //judge1判断是否有乘除法，judge2判断是加减是否有负数结果出现，judge3判断真/假分数
133     cout<<"请输入您要打印题目的数值范围:"<<endl;
134     cout<<endl;
135     cout<<"最小数min(>=0):";
136     /*判断用户输入的是否是需要的数据*/
137     while(!(cin>>min)||min<0)
138         {
139             cout<<endl;
140             cout<<"输入错误，请重新输入:";
141             cin.clear();
142             cin.sync();
143         }
144     cout<<endl;
145     cout<<"最大数max(<=1000):";
146     while(!(cin>>max||max>=1000))
147         {
148             cout<<endl;
149             cout<<"输入错误，请重新输入:";
150             cin.clear();
151             cin.sync();
152         }
153     cout<<endl;
154     
155     cout<<"是否有乘除(Y/N):";
156     cin>>judge1;
157     while(judge1!="Y"&&judge1!="y"&&judge1!="N"&&judge1!="n")             //输入数据异常判断
158     {
159         cout<<endl;
160         cout<<"输入错误，请重新输入(Y/N)：";
161         cin>>judge1;
162         cout<<endl;
163     }
164     /*假分数判断*/
165     if(judge1=="Y"||judge1=="y")
166     {
167         cout<<endl;
168         cout<<"是否允许假分数(Y/N):";
169         cin>>judge3;
170         while(judge3!="Y"&&judge3!="y"&&judge3!="N"&&judge3!="n")
171         {
172             cout<<endl;
173             cout<<"输入错误，请重新输入(Y/N)：";
174             cin>>judge3;
175             cout<<endl;
176         }
177     }
178     else
179     {
180         judge3="N";
181     }
182     cout<<endl;
183 
184     /*负数结果判断*/
185     cout<<"加减是否允许结果出现负数(Y/N):";
186     cin>>judge2;
187     while(judge2!="Y"&&judge2!="y"&&judge2!="N"&&judge2!="n")
188     {
189         cout<<endl;
190         cout<<"输入错误，请重新输入(Y/N):";
191         cin>>judge2;
192         cout<<endl;
193     }
194     cout<<endl;
195 
196     /*用户选择打印方式和间距*/
197     cout<<"请输入您要打印的方式：行间距(>=0):";
198     while((!(cin>>row))||row<0)
199         {
200             cout<<endl;
201             cout<<"输入错误，请重新输入:";
202             cin.clear();
203             cin.sync();
204         }
205     cout<<endl;
206     cout<<"要打印的列数：";
207     while((!(cin>>line))||line<=0)
208         {
209             cout<<endl;
210             cout<<"输入错误，请重新输入(>=1):";
211             cin.clear();
212             cin.sync();
213         }
214     cout<<endl;
215 
216     for(int i=0;i<m;i++)
217     {
218         cout<<"第"<<i+1<<"套"<<endl;
219         cout<<endl;
220         for(int j=0;j<n;j++)
221         {
222             if(judge1=="Y"||judge1=="y")
223             {
224                 addmult(judge3,judge2,min,max);                    //有乘除法的四则运算
225             }
226             else
227             {
228                 add(judge2,min,max);                            //无乘除法的四则运算
229             }
230             if((j+1)%line==0)
231             {
232                 for(int r=0;r<row+1;r++)
233                 {
234                     cout<<endl;
235                 }
236             }
237             else
238             {
239                 cout<<"    ";
240             }
241         }
242 
243         cout<<endl;
244         cout<<endl;
245     }
246 }
247 
248 /*主函数*/
249 int main()
250 {
251     int num1,num2;
252     string s="Y";                                //定义s,判断是否继续
253     /*使用srand函数生成预置随机数种子，
254     避免每次打开程序生成相同的随机数列*/
255     srand((unsigned)time(NULL));
256 
257     while(s=="Y"||s=="y")
258     {
259         cout<<"请输入您要打印题目套数（至少一套）:";
260         while((!(cin>>num1))||num1<=0)
261         {
262             cout<<endl;
263             cout<<"输入错误，请重新输入:";
264             cin.clear();
265             cin.sync();
266         }
267         cout<<endl;
268         
269         cout<<"请输入您要打印题目数量:";
270         while((!(cin>>num2))||num2<0)
271         {
272             cout<<endl;
273             cout<<"输入错误，请重新输入:";
274             cin.clear();
275             cin.sync();
276         }
277         cout<<endl;
278         
279         math(num1,num2);
280         cout<<"是否继续打印(Y/N):";
281         cin>>s;
282         cout<<endl;
283         while(s!="Y"&&s!="y"&&s!="N"&&s!="n")
284         {
285             cout<<"输入错误，请重新输入(Y/N)：";
286             cin>>s;
287             cout<<endl;
288         }
289     }
290 
291     return 0;
292 
293 }