本文程序类图、流程图:/post/709644…
有理数计算器
有理数计算器,用来进行有理数加减乘除的计算
问题描述:
有理数是一个可以denotative化为一个分数的数,例如2/3,533/920,-12/49都是有理数,而就为无理数appreciate。在C++中,并deno没有预先定义有理数,需要时可以定义一个有理数类,将有理数的分子和分母分别存放在两个整型变量中。对有理数的各种操作都可以用重载运算符来实现。
基本要求:
定测试抑郁症义并实现一个有理数类,通过重载运算符+、-、、/对有理数进行算术运算,能够完成基本实数运算的同时,还可以求有理数的绝对值、有理数数的加、减、乘、除、乘方、自加、自减以及比较大小的运算等,自运算要求完成前置运算和后置运算,通过重载运算符==实现判定两个有理数是否相等。
实现提示
设有两个有理数a/b和c/d,则有:
(1)windows怎么激活 有理数相加初始化电脑 分子=ad+bc;分母=b初始化英文d
(2) 有理数相减 分子=ad-bc;分母=bd
(3) 有理数相初始化电脑时出现问题未进行更改乘 分子=aappreciatec; 分母=bd
(4) 有理数相除 分子=ad; 分母=b*c
(5) 重载>>,要求能够windows10从键盘输入a/b形式的有理数,在程序中可以识别出分子和分母并进行赋值。
(6) 重载<<approach;windows许可证即将过期怎么办,输出运算结果,其中有理数数以a/b的形式输出,要求输出的是约分之后denounce的形式。
(7) 设计用户使用计算器记录功能,可以记录下不同用户使用计算测试抑郁症器的情况,记录以文件的形式保存在计算机内,每次程序运行时要求用户输入用户名,显示该名户以前的记录。用户记录用包括:做了多少次加减法、乘法、进行测试的次数,后3次的测试平均正确率等,在退出计算测试抑郁症的20道题器程序时用心的用户记录代替原有的记录
(8) 每次给用户随机出10道计算题,记录用户每次做题的日期,包括年denon是什么品牌月日和时间,将题目和用户运算结果以及正确结果和做题时间以文件的形式保存,并记录用户的准确率
。appreciate
使用说明
- 这是一个用C++语言写的程序,使用VS2010进行调试。
- 本程序涉及文件操作,以下变量可在头部公共数据块看见,具体路径请自行修改
- string uname_pwd_filwindows更新有必要吗e = “user.txt”; //存储用户名和密码的文件位置
- s初始化电脑tringdenote是什么意思 fName = “”;//存放用户使用记录,这里只是进行了初始化,具体路径可使用Ctrl+F查找变量名之后进行修改。
- string FName = “”;//存放临时数据,这里只是进行了初始化,具体路径可使用Ctrl+F查找变量名之后初始化磁盘进行修改。
- 本程序有有理数运算测试功能,为方便测试,我把答案输出了,如有需要,可在Test()方法中自行注释
写在最后
第一次写这么多行代码,难免有buAPPg,本人qq 664474618,欢迎指出,我会及时修正。
还有,喜欢的话,就给个收藏,点个初始化电脑时出现问题未进行更改赞吧~
head.h 头文件
#pragma once
#include <iostream>
#include <fstream>
#include <string>
#include <conio.h>
#include <iomanip>
#include <stdlib.h>
#include <ctime>
#include <sstream>
#include<cmath>
using namespace std;
class User{//用户类
private:
string username;//用户名
string password;//密码
int uSub;//减法次数
int uAdd;//加法次数
int uMul;//乘法次数
int uTest;//测试次数
double uAve;//平均正确率
double u_correct_rate[3];//后三次测试的正确率
string p_name;//项目名称:测试次数
string p_ave;//项目名称:平均正确率
public:
User() {
uSub = 0;
uAdd = 0;
uMul = 0;
uTest = 0;
p_name = "测试次数";
p_ave = "平均正确率";
};
void Registers();//注册
void Login();//登录
void save();//保存
void read();//读取
void statics();//用户记录
void Test();//自动出题测试系统
};
class RationalNumber{ //定义一个有理数类
friend class User;
private:
int denominator;//有理数分母
int molecule;//有理数分子
User usr;
public:
RationalNumber(int a=1,int b=1);//带默认形参的构造函数,用来初始化分子分母
void setNumber(int a,int b);//设置分子分母的函数
RationalNumber operator +(RationalNumber &c2);//重载加法运算符
RationalNumber operator -(RationalNumber &c2);//重载减法运算符
RationalNumber operator *(RationalNumber &c2);//重载乘法运算符
RationalNumber operator /(RationalNumber &c2);//重载除法运算符
bool equals(RationalNumber &c1,RationalNumber &c2);//判断两个有理数是否相等
void dispaly();//输出有理数函数
friend RationalNumber& reduction(RationalNumber& r);//将约分函数设为友元函数
friend double change(RationalNumber r);//将有理数转换为实数
friend std::istream& operator >>(std::istream& input,RationalNumber & r);//对输入流符号的重载
friend std::ostream& operator <<(std::ostream& output,RationalNumber & r);//对输出流符号的重载
void statics();
void add();//有理数加法运算法则
void subtract();//有理数减法运算法则
void multiply();//有理数乘法运算法则
void devide();//有理数除法运算法则
};
void menu();//系统菜单
char select();//选择有理数运算法则
void setWindowsStyle();//设置窗口类型
void calc();//计算器实现
void time();//时间获取模块
void start();//开始使用计算器
specific_fuc.cpp 主文件
#include"head.h"
/*----------------*/
// //
// 公共数据块 //
// //
/*----------------*/
string uName = "";//每次登录的用户名
int scount_a = 0;//记录用户序号
int uSub_p = 0;//记录减法次数
int uAdd_p = 0;//记录加法次数
int uMul_p = 0;//记录乘法次数
string uname_pwd_file = "user.txt"; //存储用户名和密码的文件位置
string fName = "";//存放用户使用记录
string FName = "";//存放临时数据
/*----------------*/
// //
//用户注册登录模块//
// //
/*----------------*/
#define SIZE 100//最大用户容量
int scount = 0;//用作储存当前已注册用户数
User user[SIZE];
User us;
//保存
void User::save()
{
ofstream ofile;
ofile.open(uname_pwd_file, ios::out);
for (int i = 0; i < scount; i++)
{
ofile << user[i].username << endl;
ofile << user[i].password << endl;
}
ofile.close();
}
//读取
void User::read()
{
ifstream ifile;
ifile.open(uname_pwd_file, ios::in);
scount = 0;
if (!ifile.is_open())
{
return;
}
for (int i = 0; !ifile.eof(); i++)
{
ifile >> user[i].username;
ifile >> user[i].password;
scount++;
}
scount--;
ifile.close();
}
//用户使用次数统计
void User::statics(){
for (int i = 0; i < scount; i++)
{
if (uName == user[i].username)
{
ofstream ofile;
string fName = "F:\STUDY\C++\code\project\有理数计算器(合)\有理数计算器(合)\user_record\" + uName + "_record.txt";
ofile.open(fName,ios::out);
user[i].uAdd = uAdd_p;
user[i].uSub = uSub_p;
user[i].uMul = uMul_p;
ofile<<"-------------------------"<<endl;
ofile<<"-------用户使用记录------"<<endl;
ofile <<uName<<"是第"<<scount_a<<"位用户,"<<"共做了: "<<"n"<<user[i].uAdd <<"次加法" <<endl<<user[i].uSub <<"次减法" << endl<<user[i].uMul <<"次乘法" << endl<<"-------------------------";
cout<<"-------------------------"<<endl;
cout<<"-------用户使用记录------"<<endl;
cout<<user[i].username<<"是第"<<scount_a<<"位用户,"<<"共做了: "<<endl<<user[i].uAdd <<"次加法" << endl <<user[i].uSub <<"次减法" << endl<<user[i].uMul <<"次乘法" << endl<<"-------------------------";
ofile.close();
}
else ;
}
}
//自动出题测试系统
void User::Test(){
for (int i = 0; i < scount; i++)
{
if (uName == user[i].username)
{
fName = "F:\STUDY\C++\code\project\有理数计算器(合)\有理数计算器(合)\test_record\" + uName + "_test_record.txt";//存放用户使用记录
FName = "F:\STUDY\C++\code\project\有理数计算器(合)\有理数计算器(合)\test_record\" + uName + "_test_record_temp.txt";//存放临时数据
cout<<"uName="<<uName<<endl;
int times ;//用来临时存放最新测试次数
ifstream ifile;//读取
ofstream ofile;//写入
ifile.open(fName,ios::in);//先打开文件
if(ifile.eof() || !ifile.is_open()){//如果数据为空或者不存在,则将测试数据写入文件
ofile.open(fName,ios::out);
user[i].uTest ++;//如果为空或者文件不存在,说明用户第一次使用,uTest初始值为0,++操作变为1
times = user[i].uTest;
ofile<<user[i].p_name<<':';//将测试次数1写入文件
ofile<<user[i].uTest<<endl;
}else{//如果不为空,则直接读取内容
//获取测试次数
getline(ifile,user[i].p_name,':');
string str;
getline(ifile,str);
stringstream sStream;
sStream << str;
sStream >>user[i].uTest;
user[i].uTest++; //在上一次测试的基础上,做++操作,测试次数加1,作为本次操作测试次数
times = user[i].uTest;
ofile.open(fName,ios_base::out);//打开文件
ofile<<user[i].p_name<<':';//将本次测试次数写入文件
ofile<<user[i].uTest<<endl;
}
ifile.close();
ofile.close();
cout<<user[i].username<<"的本次"<<user[i].p_name<<":"<<user[i].uTest<<endl;
time(); //记录时间
cout<<uName<<"进入测试"<<endl;
cout<<"共十道题,满分100分,请作答。"<<endl;
int denominator1;//第一个有理数分母
int molecule1;//第一个有理数分子
int denominator2;//第二个有理数分母
int molecule2;//第二个有理数分子
RationalNumber answer,input;//用来存放正确答案和用户输入的答案
char op;//用来选择操作
ofstream ofile_a(fName,ios::app);//将题目写入数据
int test_num = 0; //记录用户做测试题的数量
int correct_num = 0;//存放作答 正确的题目数量
srand(time(0));//用来产生随机数,需要引入头文件ctime
for(int k = 0;k<10;k++){
cout <<endl<<"第"<<k+1<<"题:"<<endl;
ofile_a <<endl<<"第"<<k+1<<"题:"<<endl;
denominator1 = (rand()%200+1)-100; //产生的随机数是一位数,有正有负
molecule1 = rand()%200-100;
denominator2 = (rand()%200+1)-100;
molecule2 = rand()%200-100;
/*
下面这个判断是有问题的,由于时间原因,图省事,就把分子为0的情况也pass掉了
*/
if (denominator2 == 0 || denominator1==0 || molecule1==0 || molecule2 == 0){ //防止分子分母出现0,防止分子出现0的原因是,没有时间改了,等有时间再修改小bug
denominator1 = (rand()%200+1)-100;
denominator2 = (rand()%200+1)-100;
molecule1 = (rand()%200+1)-100;
molecule2 = (rand()%200+1)-100;
}
RationalNumber r1,r2; //随机产生两个随机数
r1.denominator = denominator1;
r1.molecule = molecule1;
r2.denominator = denominator2;
r2.molecule = molecule2;
op = rand()%4; //随机产生四种运算符
if(op==0){
answer = reduction(r1+r2);
if(r2.denominator<0 ||r2.molecule<0){
cout<<"进入加法测试1"<<endl;
cout<<reduction(r1)<<reduction(r2)<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<reduction(r2)<<"="<<endl;
}else{
cout<<"进入加法测试2"<<endl;
cout<<reduction(r1)<<"+"<<reduction(r2)<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<"+"<<reduction(r2)<<"="<<endl;
}
}
else if(op==1){
answer = reduction(r1-r2);
if(r2.denominator<0 ||r2.molecule<0){
cout<<"进入减法测试1"<<endl;
cout<<reduction(r1)<<reduction(r2)<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<reduction(r2)<<"="<<endl;
}else{
cout<<"进入减法测试2"<<endl;
cout<<reduction(r1)<<"-"<<reduction(r2)<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<"-"<<reduction(r2)<<"="<<endl;
}
}
else if(op==2){
answer = reduction(r1*r2);
if(r2.denominator<0 ||r2.molecule<0){
cout<<"进入乘法法测试1"<<endl;
cout<<reduction(r1)<<"*"<<"("<<reduction(r2)<<")"<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<"*"<<"("<<reduction(r2)<<")"<<"="<<endl;
}else{
cout<<"进入乘法测试2"<<endl;
cout<<reduction(r1)<<"*"<<reduction(r2)<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<"*"<<reduction(r2)<<"="<<endl;
}
}
else if(op==3){
answer = reduction(r1/r2);
if(r2.denominator<0 ||r2.molecule<0){
cout<<"进入除法测试1"<<endl;
cout<<reduction(r1)<<"/"<<"("<<reduction(r2)<<")"<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<"/"<<"("<<reduction(r2)<<")"<<"="<<endl;
}else{
cout<<"进入除法测试2"<<endl;
cout<<reduction(r1)<<"/"<<reduction(r2)<<"="<<endl;
cout<<"正确答案"<<answer<<endl;
ofile_a<<reduction(r1)<<"/"<<reduction(r2)<<"="<<endl;
}
}
cin>>input; //用来存放用户输入的结果
test_num++;
RationalNumber RN;
if(RN.equals(answer,input))
{
correct_num+=1;
cout<<"用户答案:"<<input<<endl<<"恭喜!回答正确"<<endl;
cout<<endl;
ofile_a<<"用户答案:"<<input<<endl<<"恭喜!回答正确"<<endl;
ofile_a<<endl;
}
else{
cout<<"用户答案:"<<input<<endl;
ofile_a<<"用户答案:"<<input<<endl;
cout<<"本题作答错误!"<<endl;
cout<<"正确答案为:"<<answer<<endl;
cout<<endl;
ofile_a<<"用户答案:"<<input<<endl;
ofile_a<<"本题作答错误!";
ofile_a<<"正确答案为:"<<answer<<endl;
ofile_a<<endl;
}
}
double rate = 0;//获取当前的正确率
rate = (correct_num*1.0/test_num*1.0)*100;
//cout<<"你的正确率是:"<<rate<<"%"<<endl;
user[i].uTest = times;//获取当前测试次数
ifstream ifile_temp (FName,ios::in);//读取
ofstream ofile_b(fName,ios::app);
int s1 = 0; //记录第一次
int s2 = 0; //记录第二次
int s3 = 0; //记录第三次
int s = 0; //记录正确率之和
double ave = 0;//平均正确率
if(user[i].uTest == 1){
ofstream ofile_temp (FName,ios::out);//写入
ofile_temp<<rate<<endl;
ofile_b<<"测试次数为"<<user[i].uTest<<","<<user[i].p_ave<<"为:"<<rate<<"%";
cout<<user[i].username<<",测试次数不足三次,前"<<user[i].uTest<<"次的"<<user[i].p_ave<<"为:"<<rate<<"%"<<endl;
ofile.close();
}else if(user[i].uTest == 2){
string str;
getline(ifile_temp,str);
stringstream sStream;
sStream <<str;
sStream >> s1;
s2 = rate;//将第二次测试正确率存入cr
s = s1 +s2;//前两次正确率之和
ave =s*1.0/user[i].uTest*1.0; //前两次的平均正确率
ofstream ofile_temp (FName,ios::out);//写入
ofile_temp<<s1<<',';
ofile_temp<<s2<<endl;
ofile_b<<"测试次数为"<<user[i].uTest<<","<<user[i].p_ave<<"为:"<<ave<<"%";
cout<<user[i].username<<",测试次数不足三次,前"<<user[i].uTest<<"次的"<<user[i].p_ave<<"为:"<<ave<<"%"<<endl;
}else if(user[i].uTest == 3){
//获取第一次正确率
string str1;
getline(ifile_temp,str1,',');
stringstream sStream1;
sStream1 <<str1;
sStream1 >> s1;
//获取第二次正确率
string str2;
getline(ifile_temp,str2);
stringstream sStream2;
sStream2 <<str2;
sStream2 >> s2;
s3 = rate;//将第二次测试正确率存入cr
s = s1 + s2 + s3;//前两次正确率之和
ave =s*1.0/user[i].uTest*1.0; //前两次的平均正确率
ofstream ofile_temp (FName,ios::out);//写入
ofile_temp<<s1<<',';
ofile_temp<<s2<<',';
ofile_temp<<s3<<endl;
ofile_b<<"测试次数为"<<user[i].uTest<<","<<user[i].p_ave<<"为:"<<ave<<"%";
cout<<user[i].username<<",测试次数为三次,前"<<user[i].uTest<<"次的"<<user[i].p_ave<<"为:"<<ave<<"%"<<endl;
}
else if(user[i].uTest > 3){
//获取第一次正确率
string str1;
getline(ifile_temp,str1,',');
stringstream sStream1;
sStream1 <<str1;
sStream1 >> s1;
//获取第二次正确率
string str2;
getline(ifile_temp,str2,',');
stringstream sStream2;
sStream2 <<str2;
sStream2 >> s2;
//获取第三次正确率
string str3;
getline(ifile_temp,str3);
stringstream sStream3;
sStream3 <<str3;
sStream3 >> s3;
//cout << ">3s3 = " << s3<<endl;
s1 = s2;//将前一次数据抹除
s2 = s3;
s3 = rate;
s = s1 + s2 + s3;//前两次正确率之和
ave =s*1.0/3.0; //前两次的平均正确率
ofstream ofile_temp (FName,ios::out);//写入
ofile_temp<<s1<<',';
ofile_temp<<s2<<',';
ofile_temp<<s3<<endl;
ofile_b<<"测试次数为"<<user[i].uTest<<",后三次的"<<user[i].p_ave<<"为:"<<ave<<"%";
cout<<user[i].username<<",测试次数大于三次,后三次的"<<user[i].p_ave<<"为:"<<ave<<"%"<<endl;
}
}
}
}
//注册
void User::Registers()
{
us.read();//读取已储存用户数据
string usr;//用户名
string pw1;//密码1
string pw2;//密码2
for (int i = scount; i < SIZE; i++)
{
here:
cout << "ttt【系统提示】请输入用户名:";
cin >> usr;
//判断新输入的用户信息是否已存在(如果已存在则重新输入)
for (int i = 0; i < scount; i++)
{
if (usr == user[i].username)
{
cout << "ttt【系统提示】用户已存在!" << endl;
goto here;
}
}
user[i].username = usr;
int chose = -1;
cout << endl;
cout << "ttt┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓n";
cout << "ttt┃ 1.显示密码 2.隐藏密码 ┃tn";
cout << "ttt┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛n";
cout << "ttt【系统提示】请输入你的选择:";
cin >> chose;
if (chose > 2 || chose < -1)
{
cout << "ttt【系统提示】输入格式错误,请重新输入:";
cin >> chose;
}
string pword;
char ch, passwords0[20];
int x = 0;
string pword1;
char ch1, passwords1[20];
int x1 = 0;
switch (chose)
{
case 1:
cout << "ttt【系统提示】请输入密码:";
cin >> pword;
user[i].password = pword;
cout << "ttt【系统提示】请再次密码:";
cin >> pword1;
if (pword1 != user[i].password)
{
cout << "ttt【系统提示】密码不一致!" << endl;
goto here;
}
else
{
scount++;//已注册用户加1
cout << "ttt【系统提示】注册成功!" << endl;
us.save();//保存用户数据
}
break;
case 2:
cout << "ttt【系统提示】请输入密码:";
while ((ch = _getch()) != 'r' && x <= 20)
{
if (ch == 'b')
{
if (x > 0)
{
x--;
cout << "b b";//密码支持退格的实现
}
else
putchar(7);
}
else
{
passwords0[x++] = ch;
printf("*");
}
}
passwords0[x] = '';
cout << endl;
user[i].password = passwords0;
cout << "ttt【系统提示】请再次密码:";
while ((ch1 = _getch()) != 'r' && x1 <= 20)
{
if (ch1 == 'b')
{
if (x1 > 0)
{
x1--;
cout << "b b";//密码支持退格的实现
}
else
putchar(7);
}
else
{
passwords1[x1++] = ch1;
printf("*");
}
}
passwords1[x1] = '';
cout << endl;
//比较两次输入的密码是否统一(如果不统一则重新输入)
if (passwords1 != user[i].password)
{
cout << "ttt【系统提示】密码不一致!" << endl;
goto here;
}
else
{
scount++;//已注册用户加1
cout << "ttt【系统提示】注册成功!" << endl;
us.save();//保存用户数据
}
break;
}
char choice;
cout << "ttt【系统提示】是否继续注册(Y/N)? :";
while (1)
{
cin >> choice;
if (choice == 'y' || choice == 'Y' || choice == 'n' || choice == 'N')
break;
else
cout << "ttt【系统提示】输入格式错误,请重新输入: ";
}
if (choice == 'n' || choice == 'N')
{
cout << "ttt【系统提示】注册完成,请退出重新登录! "<<endl;
exit(1);
}
}
}
//登录
void User::Login()
{
us.read();//读取已储存用户数据
register_1:
if(scount == 0){
cout<<"ttt【系统提示】您是第一个用户,请先注册:"<<endl;
cout<<"ttt【系统提示】是否注册(y/n):";
char c;
cin>>c;
switch(c){
case 'y':Registers();break;
case 'Y':Registers();break;
case 'n':exit(1); break;
case 'N':exit(1);break;
default:
cout<<"输入错误,请重新输入!"<<endl;
goto register_1;
}
}
string usr;//用户名
string pw;//密码
int time = 0;//统计比较次数
cout << "ttt【系统提示】请输入用户名:";
cin >> usr;
for (int i = 0; i < scount; i++)
{
if(usr == user[i].username){
break;
}
else if(usr != user[i].username && i==scount-1){
register_2:
char c;
cout<<"未找到用户,是否注册(y/n)?:";
cin>>c;
switch(c){
case 'y':Registers();break;
case 'Y':Registers();break;
case 'n':exit(1); break;
case 'N':exit(1);break;
default:
cout<<"输入错误,请重新输入!"<<endl;
goto register_2;
}
}
}
here:
int chose = -1;
cout << endl;
cout << "ttt┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓n";
cout << "ttt┃ 1.显示密码 2.隐藏密码 ┃tn";
cout << "ttt┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛n";
cout << "ttt【系统提示】请输入你的选择:";
cin >> chose;
if (chose > 2 || chose < 1)
{
cout << "ttt【系统提示】输入格式错误,请重新输入:";
cin >> chose;
}
string pword;
char ch, passwords0[20];
int x = 0;
switch (chose)
{
case 1:
cout << "ttt【系统提示】请输入密码:";
cin >> pword;
for (int i = 0; i < scount; i++)
{
if (usr == user[i].username && pword == user[i].password)
{
scount_a = i+1;
uName = user[i].username;
time++;
cout << "ttt【系统提示】登录成功!" << endl;
}
}
if (time == 0)
{
cout << "ttt【系统提示】密码输入错误!请重新输入密码" << endl;
goto here;
}
break;
case 2:
cout << "ttt【系统提示】请输入密码:";
while ((ch = _getch()) != 'r' && x <= 20)
{
if (ch == 'b')
{
if (x > 0)
{
x--;
cout << "b b";//密码支持退格的实现
}
else
putchar(7);
}
else
{
passwords0[x++] = ch;
printf("*");
}
}
passwords0[x] = '';
cout << endl;
//依次比较已储存信息,比较是否匹配(如不匹配则提示错误)
for (int i = 0; i < scount; i++)
{
if (usr == user[i].username && passwords0 == user[i].password)
{
scount_a = i+1;
uName = user[i].username;
time++;
cout << "ttt【系统提示】登录成功!" << endl;
}
}
if (time == 0)
{
cout << "ttt【系统提示】密码输入错误!请重新输入密码" << endl;
goto here;
}
break;
}
}
/*----------------*/
// //
//有理数计算机模块//
// //
/*----------------*/
RationalNumber::RationalNumber(int a,int b){
molecule=a;
denominator=b;
}
void RationalNumber::setNumber(int a,int b){
molecule=a;
denominator=b;
}
RationalNumber RationalNumber::operator +(RationalNumber &c2){
RationalNumber c;
c.denominator = denominator*c2.denominator;
c.molecule = molecule*c2.denominator+c2.molecule*denominator;
return c;
}
RationalNumber RationalNumber::operator -(RationalNumber &c2){
RationalNumber c;
c.denominator = denominator*c2.denominator;
c.molecule = molecule*c2.denominator-c2.molecule*denominator;
return c;
}
RationalNumber RationalNumber::operator *(RationalNumber &c2){
RationalNumber c;
c.denominator = denominator*c2.denominator;
c.molecule = molecule*c2.molecule;
return c;
}
RationalNumber RationalNumber::operator /(RationalNumber &c2){
RationalNumber c;
c.denominator = denominator*c2.molecule;
c.molecule = molecule*c2.denominator;
return c;
}
bool RationalNumber::equals(RationalNumber &c1,RationalNumber &c2){
if(c1.denominator*c2.molecule == c1.molecule*c2.denominator){
return true;
}else
{
return false;
}
}
void RationalNumber::dispaly(){ //有理数输出函数实现
cout<<molecule<<"/"<<denominator<<endl;
}
ostream & operator<<(ostream& output,RationalNumber & r){ //实现输出符号重载
if(r.denominator<0){
r.denominator=-1*r.denominator;
output<<"-("<<r.molecule<<"/"<<r.denominator<<")";
r.denominator=-1*r.denominator;
}
else if(r.molecule<0){
r.molecule=-1*r.molecule;
output<<"-("<<r.molecule<<"/"<<r.denominator<<")";
r.molecule=-1*r.molecule;
}
else
output<<"("<<r.molecule<<"/"<<r.denominator<<")";
return output;
}
istream & operator>>(istream& input,RationalNumber &r){ //实现输入流函数重载
input >> r.molecule>>r.denominator;
return input;
}
double change(RationalNumber r){ //实现有理数转换成实数
return static_cast<double>(r.molecule*1.0)/static_cast<double>(r.denominator);
}
RationalNumber & reduction(RationalNumber &r){ //实现约分
int a,b,temp;
if(r.denominator<0){
r.molecule = -r.molecule;
r.denominator = -r.denominator;
}
if(r.denominator>abs(r.molecule)){
a=r.denominator;
b=abs(r.molecule);
}
else{
a=abs(r.molecule);
b=r.denominator;
}
while(b!=0){
temp=a%b;
a=b;
b=temp;
}
r.molecule=r.molecule/a;
r.denominator=r.denominator/a;
return r;
}
void RationalNumber::add(){
RationalNumber a;
RationalNumber b;
cout<<"进行有理数的加法运算"<<endl;
cout<<"请输入第一个有理数的分子和分母"<<endl;
cin>>a;
cout<<"请输入第二个有理数的分子和分母"<<endl;
cin>>b;
if(b.denominator<0 ||b.molecule<0){
cout<<reduction(a)<<reduction(b)<<"="<<reduction(a+b)<<endl;
}
else{
cout<<reduction(a)<<"+"<<reduction(b)<<"="<<reduction(a+b)<<endl;
}
}
void RationalNumber::subtract(){
RationalNumber a;
RationalNumber b;
cout<<"进行有理数的减法运算"<<endl;
cout<<"请输入第一个有理数的分子和分母"<<endl;
cin>>a;
cout<<"请输入第二个有理数的分子和分母"<<endl;
cin>>b;
if(b.denominator<0 ||b.molecule<0){
cout<<reduction(a)<<reduction(b)<<"="<<reduction(a+b)<<endl;
}
else{
cout<<reduction(a)<<"-"<<reduction(b)<<"="<<reduction(a-b)<<endl;
}
}
void RationalNumber::multiply(){
RationalNumber a;
RationalNumber b;
cout<<"进行有理数的乘法运算"<<endl;
cout<<"请输入第一个有理数的分子和分母"<<endl;
cin>>a;
cout<<"请输入第二个有理数的分子和分母"<<endl;
cin>>b;
if(b.denominator<0 ||b.molecule<0){
cout<<reduction(a)<<"*"<<"("<<reduction(b)<<")"<<"="<<reduction(a+b)<<endl;
}
else{
cout<<reduction(a)<<"*"<<reduction(b)<<"="<<reduction(a*b)<<endl;
}
}
void RationalNumber::devide(){
RationalNumber a;
RationalNumber b;
cout<<"进行有理数的除法运算"<<endl;
cout<<"请输入第一个有理数的分子和分母"<<endl;
cin>>a;
cout<<"请输入第二个有理数的分子和分母"<<endl;
cin>>b;
if(b.denominator<0 ||b.molecule<0){
cout<<reduction(a)<<"/"<<"("<<reduction(b)<<")"<<"="<<reduction(a+b)<<endl;
}
else{
cout<<reduction(a)<<"/"<<reduction(b)<<"="<<reduction(a/b)<<endl;
}
}
void menu(){
cout<<"---------1.有理数加法运算----------"<<endl;
cout<<"---------2.有理数减法运算----------"<<endl;
cout<<"---------3.有理数乘法运算----------"<<endl;
cout<<"---------4.有理数除法运算----------"<<endl;
cout<<"---------5.有理数运算测试----------"<<endl;
cout<<"---------6.退出计算器----------"<<endl;
}
void calc(){
char a;
cout<<"是否进入教程?(y/n)"<<endl;
Loop:
a=getch();
switch(a){
case 'y':
{
cout<<"以下有理数输出形式均为(a/b)"<<endl;
RationalNumber r1(3,5),r2(2,9),r3,r4;
cout<<"r1和r2由带参构造函数创建"<<endl;
cout<<"r1:"<<r1<<" r2: "<<r2<<endl;
cout<<"r3和r4由键盘键入 (请按任意键开始从键盘输入)"<<endl;
getch();
cout<<"请输入r3: ";
cin>>r3;
cout<<"请输入r4: ";
cin>>r4;
cout<<"r1: "<<r1<<" r2: "<<r2<<" r3: "<<reduction(r3)<<" r4: "<<reduction(r4)<<endl;
cout<<"r1: "<<r1<<" 转换成实数为:"<<setprecision(3)<<change(r1)<<endl;
cout<<"r2: "<<r2<<" 转换成实数为:"<<setprecision(3)<<change(r2)<<endl;
cout<<"r3: "<<r3<<" 转换成实数为:"<<setprecision(3)<<change(r3)<<endl;
cout<<"r4: "<<r4<<" 转换成实数为:"<<setprecision(3)<<change(r4)<<endl;
cout<<"r1+r2: "<<reduction(r1)<<"+"<<reduction(r2)<<"="<<reduction(r1+r2)<<endl;
cout<<"r2-r3: "<<reduction(r2)<<"-"<<reduction(r3)<<"="<<reduction(r2-r3)<<endl;
cout<<"r3*r4: "<<reduction(r3)<<"*"<<reduction(r4)<<"*"<<reduction(r3*r4)<<endl;
cout<<"r2/r4: "<<reduction(r2)<<"/"<<reduction(r4)<<"="<<reduction(r2/r4)<<endl;
};
case 'n':
{
cout<<"是否进入菜单?(y/n)"<<endl;
char c;
while(1){
c=getch();
if(c=='y'){
c=select();
if(c=='6')
break;
}
else if(c=='n'){
break;
}
else
;
}
cout<<"已经退出运算,按任意键退出程序"<<endl;
getch();
cout<<"成功退出!"<<endl;
};
break;
default:
cout<<"您的输入有误,请重新输入(y/n)"<<endl;
goto Loop;
}
}
char select(){
RationalNumber RN;
User user;
char c;
while(1){
menu();
c=getch();
switch(c){
case'1':RN.add();uAdd_p++;break;
case'2':RN.subtract();uSub_p++;break;
case'3':RN.multiply();uMul_p++;break;
case'4':RN.devide();break;
case'5':user.Test();break;
case'6':break;
}
if(c=='6')
break;
}
return c;
}
void setWindowsStyle(){
system("title 有理数计算器");
system("color f0");
system("mode con cols=80 lines=40");
}
void time(){
fName = "F:\STUDY\C++\code\project\有理数计算器(合)\有理数计算器(合)\test_record\" + uName + "_test_record.txt";//存放用户使用记录
fstream ofile(fName,ios::app);
// 基于当前系统的当前日期/时间
time_t now = time(0);
tm *ltm = localtime(&now);
// 输出 tm 结构的各个组成部分
cout <<"作答的时间为:"<<endl;
cout <<1900 + ltm->tm_year << "年";
cout << 1 + ltm->tm_mon<< "月";
cout << ltm->tm_mday << "日"<< endl;
cout << "时间: "<< ltm->tm_hour << ":";
cout << ltm->tm_min << ":";
cout << ltm->tm_sec << endl;
cout << "--------------------------"<<endl;
ofile<<"作答的时间为:"<<endl;
ofile <<1900 + ltm->tm_year << "年";
ofile << 1 + ltm->tm_mon<< "月";
ofile << ltm->tm_mday << "日"<< endl;
ofile << "时间: "<< ltm->tm_hour << ":";
ofile << ltm->tm_min << ":";
ofile << ltm->tm_sec << endl;
ofile << "--------------------------"<<endl;
ofile.close();
}
void start(){
cout << endl;
cout << "ttt┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓n";
cout << "ttt┃ 1.注 册 2.登 录 ┃tn";
cout << "ttt┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛n";
cout << "ttt【系统提示】请输入你的选择:";
char chose;
while (1)
{
cin >> chose;
if (chose == '1' ||chose == '2')
break;
else
cout << "ttt【系统提示】输入格式错误,请重新输入: ";
}
switch (chose)
{
case '1':us.Registers(); break;
case '2':us.Login(); break;
}
}
int main(){
//设置窗口类型
setWindowsStyle();
//开始计算器使用
start();
//计算器模块
calc();
//统计模块
us.statics();
system("pause");
return 0;
}