四则运算三

#include "stdafx.h"
#include "iostream.h"
#include "stdlib.h"
#include "time.h"
#include "Caculation.h"
#include "iomanip.h"

//*****判断回答是否正确*****
bool RightOrWrong(Caculation &Q,int answer)
{
if(Q.sign==0)
{
Q.answer=Q.num1+Q.num2;
}
else if(Q.sign==1)
{
Q.answer=Q.num1-Q.num2;
}
else if(Q.sign==2)
{
Q.answer=Q.num1*Q.num2;
}
else
Q.answer=Q.num1/Q.num2;
if(answer==Q.answer)
return true;
else
return false;
}
//******重新生成算术题******
void ReBuild(Caculation &Q)
{
if(para[4]==1)
Q.sign=rand()%4;
else
Q.sign=rand()%2;
Q.num1=rand()%(para[6]-para[5]+1)+para[5];
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
}

//*****输出函数*****
void Display1(LinkC C,Caculation &Q)
{
int temp,count=0;                                    //count记录重新生成题目的次数
for(int i=1;i<=para[1];i++)
{
cout<<"("<<i<<")";
if(para[4]==1)
Q.sign=rand()%4;                            //有乘除法
else
Q.sign=rand()%2;                            //没有乘除法
Q.num1=rand()%(para[6]-para[5]+1)+para[5];        //随机的(下限~上限)以内的整数
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
RB:        ReBuild(Q);                                        //检查是否有出过的题目
if(count>((para[6]-para[5]+1)*(para[6]-para[5]+1)*100))
{
cout<<endl<<"该难度的题目已出完，请更改出题设置！"<<endl;
break;
}
switch(Q.sign)
{
case 0:
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"+"<<Q.num2<<"="<<setw(5);
break;
case 1:
if((para[7]==0)&&(Q.num1<Q.num2))
{                                        //若为负数，则交换
temp=Q.num1;
Q.num1=Q.num2;
Q.num2=temp;
}
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"-"<<Q.num2<<"="<<setw(5);break;
case 2:
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"*"<<Q.num2<<"="<<setw(5);break;
case 3:
while(Q.num2==0)
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
if(!para[8])
{
while((Q.num1%Q.num2)!=0||Q.num2==0)
{                                        //重新生成
Q.num1=rand()%(para[6]-para[5]+1)+para[5];
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
}
}
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"/"<<Q.num2<<"="<<setw(5);break;
}
InsertQues(C,Q);
if(i%para[2]==0)                                    //一行打印完规定列数，换行
for(int j=0;j<=para[3];j++)
cout<<endl;
}
cout<<endl<<endl;
}
//*****回答题目函数******
void Display2(LinkC C,Caculation &Q)
{
int temp,count=0,answer=0,right=0;                    //count记录重新生成题目的次数
for(int i=1;i<=para[1];i++)
{
cout<<"("<<i<<")";
if(para[4]==1)
Q.sign=rand()%4;                            //有乘除法
else
Q.sign=rand()%2;                            //没有乘除法
Q.num1=rand()%(para[6]-para[5]+1)+para[5];                        //随机的(下限~上限)以内的整数
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
RB:        ReBuild(Q);                                        //检查是否有出过的题目
if(count>((para[6]-para[5]+1)*(para[6]-para[5]+1)*100))
{
cout<<endl<<"该难度的题目已出完，请更改出题设置！"<<endl;
break;
}
switch(Q.sign)
{
case 0:
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"+"<<Q.num2<<"=";
cin>>answer;
if(RightOrWrong(Q,answer))
{
cout<<"\t√";
right++;
}
else
cout<<"\t×";
break;
case 1:
if((para[7]==0)&&(Q.num1<Q.num2))
{                                        //若为负数，则交换
temp=Q.num1;
Q.num1=Q.num2;
Q.num2=temp;
}
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"-"<<Q.num2<<"=";
cin>>answer;
if(RightOrWrong(Q,answer))
{
cout<<"\t√";
right++;
}
else
cout<<"\t×";
break;
case 2:
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"*"<<Q.num2<<"=";
cin>>answer;
if(RightOrWrong(Q,answer))
{
cout<<"\t√";
right++;
}
cout<<"\t×";
break;
case 3:
while(Q.num2==0)
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
if(!para[8])
{
while((Q.num1%Q.num2)!=0||Q.num2==0)
{                                        //重新生成
Q.num1=rand()%(para[6]-para[5]+1)+para[5];
Q.num2=rand()%(para[6]-para[5]+1)+para[5];
}
}
if(ExistQues(C,Q))
{
count++;
goto RB;
}
cout<<Q.num1<<"/"<<Q.num2<<"=";
cin>>answer;
if(RightOrWrong(Q,answer))
{
cout<<"\t√";
right++;
}
cout<<"\t×";
break;
}
InsertQues(C,Q);
cout<<endl;
}
cout<<"共回答正确"<<right<<"道题。";
cout<<endl<<endl;
}

//*****判断难度*****
void YesOrNo(int para)
{
if(para)
cout<<"是";
else
cout<<"否";
}
//*****查看设置*****
void ShowSetting()
{
system("cls");
cout<<"\t/*************四则运算出题系统*************/"<<endl;
cout<<"\t题目数量："<<para[1]<<"个\t\t打印列数："<<para[2]<<"列"<<endl;
cout<<"\t每行间隔："<<para[3]<<"行\t\t是否有乘除法：";YesOrNo(para[4]);cout<<endl;
cout<<"\t数值范围下限："<<para[5]<<"\t\t数值范围上限："<<para[6]<<endl;
cout<<"\t是否有负数：";YesOrNo(para[7]);cout<<"\t\t是否有余数：";YesOrNo(para[8]);cout<<endl;
cout<<"\t/******************************************/"<<endl;
}
//*****设置打印方式*****
void SetPrint()
{
system("cls");
char move1;
cout<<"\t/*************设置打印方式*************/"<<endl;
cout<<"\t          0.设置打印列数("<<para[2]<<"列)"<<endl;
cout<<"\t          1.设置每行间隔("<<para[3]<<"行)"<<endl;
cout<<"\t              2.返回主菜单"<<endl;
cout<<"\t/**************************************/"<<endl;
cout<<"请选择后续操作(0~2)：";
cin>>move1;
while(move1<'0'||move1>'2')
{
cout<<"错误！请正确输入操作序号(0~2)：";
cin>>move1;
}
switch(move1)
{
case '0':
reset2:        cout<<"新的打印列数(建议7列以内)：";
cin>>para[2];
if(para[2]<0)
{
cout<<"出错！请重新输入！"<<endl;
goto reset2;
}
break;
case '1':
reset3:        cout<<"新的间隔行数：";
cin>>para[3];
if(para[3]<0)
{
cout<<"出错！请重新输入！"<<endl;
goto reset3;
}
break;
case '2':break;
}
}
//*****判断输入正确*****
void Reset(int i)
{
do
{
cout<<"请重新设置(是1/否0)：";
cin>>para[i];                            //此处输入字符出错，但没解决
}while(para[i]!=0&¶[i]!=1);
}
//*****设置题目难度*****
void SetLevel()
{
system("cls");
char move2;
cout<<"\t/*************设置题目难度*************/"<<endl;
cout<<"\t            0.是否有乘除法(";YesOrNo(para[4]);cout<<")"<<endl;
cout<<"\t            1.数值范围("<<para[5]<<"~"<<para[6]<<")"<<endl;
cout<<"\t            2.是否有负数(";YesOrNo(para[7]);cout<<")"<<endl;
cout<<"\t            3.是否有余数(";YesOrNo(para[8]);cout<<")"<<endl;
cout<<"\t              4.返回主菜单"<<endl;
cout<<"\t/**************************************/"<<endl;
cout<<"请选择后续操作(0~4)：";
cin>>move2;
while(move2<'0'||move2>'4')
{
cout<<"错误！请正确输入操作序号(0~4)：";
cin>>move2;
}
switch(move2)
{
case '0':Reset(4);break;
case '1':                                //此处若输入字符，则出错
reset1:        cout<<"新的数值下限：";                //但没找到解决方法
cin>>para[5];
cout<<"新的数值上限：";
cin>>para[6];
if(para[5]>=para[6])
{
cout<<"出错！请重新输入数值范围！"<<endl;
goto reset1;
}
break;
case '2':Reset(7);break;
case '3':Reset(8);break;
case '4':break;
}
}
//****主页面*****
void MainMenu(LinkC &C,Caculation &Q)
{
char move,save;
cout<<"\t/*************四则运算出题系统*************/"<<endl;
cout<<"\t                 0.开始出题"<<endl;
cout<<"\t               1.设置出题数量"<<endl;
cout<<"\t               2.设置打印方式"<<endl;
cout<<"\t               3.设置题目难度"<<endl;
cout<<"\t               4.查看当前设置"<<endl;
cout<<"\t                 5.开始答题"<<endl;
cout<<"\t                 6.退出系统"<<endl;
cout<<"\t/******************************************/"<<endl;
cout<<"请选择后续操作(0~6)：";
cin>>move;
while(move<'0'||move>'6')
{
cout<<"错误！请正确输入操作序号(0~6)：";
cin>>move;
}
switch(move)
{
case '0':Display1(C,Q);break;
case '1':
reset4:        cout<<"请设置出题数量(建议100道以内)：";
cin>>para[1];
if(para[1]<=0)
{
cout<<"出错！请重新输入！"<<endl;
goto reset4;
}
break;
case '2':SetPrint();break;
case '3':SetLevel();break;
case '4':ShowSetting();break;
case '5':Display2(C,Q);break;
case '6':
cout<<"是否保存出题记录(是1/否0)：";
cin>>save;
while(save!='1'&&save!='0')
{
cout<<"出错！请正确输入(是1/否0)：";
cin>>save;
}
if(save=='1')
WriteQues(C);
cout<<"感谢您的使用，再见！"<<endl;
para[0]=0;break;
}
}

int main(int argc, char* argv[])
{
srand((unsigned)time(NULL));    //srand()函数产生一个以当前时间开始的随机种子
LinkC Cacu;
Caculation ques;
InitList(Cacu);
ReadQues(Cacu);
while(para[0])
{
system("cls");
MainMenu(Cacu,ques);
system("pause");
}
return 0;
}
（2）
#include "iostream.h"
#include "fstream.h"

//0退出、1出题数量、2打印列数、3每行间隔、4乘除、5数值范围下限、6数值范围上限、7负数、8余数、9出过的题目数
int para[10]={1,30,3,0,0,0,5,0,0,0};    //默认参数

//*****四则算术题的数据结构*****
typedef struct
{
int num1;
int num2;
int sign;
int answer;
}Caculation;
typedef struct CNode                    //结点
{
Caculation ques;
struct CNode * next;
}CNode,*LinkC;
//******题目初始化******
void InitList(LinkC &C)
{
C=new CNode;
C->next=NULL;
}
//******添加题目信息******
void InsertQues(LinkC &C,Caculation Q)
{                                        //尾插入
LinkC tail,temp;
tail=C;
while(tail&&tail->next!=NULL)
tail=tail->next;
temp=new CNode;
temp->ques=Q;
temp->next=NULL;
tail->next=temp;
tail=temp;
para[9]++;
}
//******判断题目存在******
int ExistQues(LinkC C,Caculation Q)
{
LinkC temp;
temp=C->next;
while(temp)
{
if((temp->ques.num1==Q.num1)&&(temp->ques.num2==Q.num2)&&(temp->ques.sign==Q.sign))
return 1;                    //当两个数字和算符与链表中的一样，则存在
else
temp=temp->next;
}
return 0;
}
//******读取出过的问题******
void ReadQues(LinkC &C)
{
LinkC temp;
ifstream infile("question.txt");
for(int i=0;i<10;i++)                //读取参数表
infile>>para[i];
for(i=0;i<para[9];i++)                //读取出过的题目
{
temp=new CNode;
infile>>temp->ques.num1;
infile>>temp->ques.num2;
infile>>temp->ques.sign;
temp->next=NULL;
}
}
//******写入文件******
void WriteQues(LinkC C)
{
LinkC temp;
ofstream outfile("question.txt");
if(!outfile)
{
cout<<"文件存储失败！"<<endl;
exit(0);
}
for(int i=0;i<10;i++)
outfile<<para[i]<<" ";
for(temp=C->next;temp;temp=temp->next)
{
outfile<<temp->ques.num1<<" ";
outfile<<temp->ques.num2<<" ";
outfile<<temp->ques.sign<<" ";
}