1L

复数计算器

#include<iostream>
#include<cmath>
#include<cstdlib>
#include<cstring>
#include<fstream>
#include<ctime>
#define EPS 1e-5 //定义精度常数
using namespace std; //使用标准空间命名std
namespace NameCComplex //定义命名空间NameCComplex
{
class CComplex ////定义一个CComplex类
{
private:
double Real,Image;
public:
CComplex(double real=0,double image=0) //构造函数
{
Real=real;
Image=image;
}
friend istream & operator>>(istream &is,CComplex &com); //重载输入
friend ostream & operator<<(ostream &os,CComplex &com); //重载输出
CComplex operator+(CComplex &com); //加法重载
CComplex operator-(CComplex &com); //减法重载
CComplex operator*(CComplex &com); //乘法重载
CComplex operator+=(CComplex &com); //加法赋值重载
CComplex operator-=(CComplex &com); //减法赋值重载
CComplex operator*=(CComplex &com); //乘法赋值重载
CComplex operator++(); //自加
CComplex operator--(); //自减
double mod(void); //求复数的模
int operator>(CComplex &com);
int operator<(CComplex &com);
int operator!=(CComplex &com);
int operator==(CComplex &com);
};

else
os<<com.Real<<com.Image<<"i"; //虚部为正
return os;
}
CComplex CComplex::operator+(CComplex &com) //加法重载
{
CComplex sum;
sum.Real=Real+com.Real; //实部相加
sum.Image=Image+com.Image; //虚部相加
return sum;
}
CComplex CComplex::operator*(CComplex &com) //乘法重载
{
CComplex multi;
multi.Real=Real*com.Real-Image*com.Image; //乘积实部
multi.Image=Real*com.Image+Image*com.Real; //乘积虚部
return multi;
}
CComplex CComplex::operator-(CComplex &com) //减法重载
{
CComplex sub;
sub.Real=Real-com.Real;
sub.Image=Image-com.Image;
return sub;
}
CComplex CComplex::operator+=(CComplex &com) //重载加法赋值
{
Real=Real+com.Real;
Image=Image+com.Image;
return *this;
}
CComplex CComplex::operator-=(CComplex &com) //重载减法赋值
{
Real=Real-com.Real;
Image=Image-com.Image;
return *this;
}
CComplex CComplex::operator*=(CComplex &com) //重载乘法赋值
{
double nReal=Real*com.Real-Image*com.Image;
double nImage=Real*com.Image+Image*com.Real;
Real=nReal;
Image=nImage;
return *this;
}
int CComplex::operator==(CComplex &com) //重载等于
{
if(Real==com.Real && Image==com.Image)
return 1;
else
return 0;
}
void Test(void) //测试函数
{
user.nTest++;
cout<<"共10道题，做100以内的加减运算，满分100分:\n";
double real1,real2,image1,image2,real3,real4,image3,image4;
CComplex answer,temp;
int score=0;
char op;
for(int i=0;i<=9;i++)
{
/////为复数产生随机值
real1=rand()%200-100;
image1=rand()%200-100;
real2=rand()%200-100;
image2=rand()%200-100;
CComplex a(real1,image1),b(real2,image2);
real3=rand()%20-10;
image3=rand()%20-10;
real4=rand()%20-10;
image4=rand()%20-10;
CComplex c(real3,image3),d(real4,image4);
op=rand()%3; //产生随机加减乘法运算的三个值
switch(op)
{
case 0:
answer=a+b;
cout<<a<<"加上"<<b<<"等于";
break;
case 1:
answer=a-b;
cout<<a<<"减去"<<b<<"等于";
break;
case 2:
answer=c*d;
cout<<c<<"乘以"<<d<<"等于";
break;
}
cin>>temp; //输入用户计算值
if(answer==temp) //比较用户计算值
{
score+=10;
}
else
{
cout<<"此题做错了\n";
cout<<"正确答案为:"<<answer<<endl;
}
}
cout<<"你的最后得分是:"<<score<<endl;
if(user.nTest<=3)
{
user.alAve=0;
user.dlScore[user.nTest-1]=score;
for(int i=0;i<user.nTest;i++)
user.alAve+=user.dlScore[i];
user.alAve=user.alAve/user.nTest;
}
else
{
user.dlScore[0]=user.dlScore[1];
user.dlScore[1]=user.dlScore[2];
user.dlScore[2]=score;
for(i=0,user.alAve=0;i<3;i++)
user.alAve+=user.dlScore[i];
user.alAve=user.alAve/3;
}
cout<<"请按任意键继续\n";
cout.flush();
cin.get();

cin.get();
}
void Add() //复数加法运算函数
{
user.nAdd++;
CComplex num1,num2,sum,Zero(0,0);
cout<<"加法计算\n"<<"最少输入两个复数,并且以0结束\n";
cout<<"第一个复数:";
cin>>num1;
cout<<"第二个复数:";
cin>>num2;
sum=num1+num2;
cout<<"第三个复数:";
cin>>num1;
int i=4;
while(!(num1==Zero))
{
sum=sum+num1;
cout<<"第"<<i<<"个复数:";
cin>>num1;
i++;
}
cout<<"加法结果是:"<<sum<<endl;
cout<<"请按任意键继续\n";
cout.flush();
cin.get();
cin.get();
}
void Sub() //复数减法预算函数
{
user.nSub++;
CComplex num1,num2,sub,Zero(0,0);
cout<<"最少输入两个复数，并且以0结束\n";
cout<<"第1个复数:";
cin>>num1;
cout<<"第2个复数:";
cin>>num2;
sub=num1-num2;
cout<<"第3个复数:";
cin>>num1;
int i=4;
while(!(num1==Zero))
{
sub=sub-num1;
cout<<"第"<<i<<"个复数:";
cin>>num1;
i++;
}
cout<<"减法结果是:"<<sub<<endl;
cout<<"请按任意键继续\n";
cout.flush();
cin.get();
cin.get();
}
void Mul() //复数乘积函数
{
user.nMul++;
CComplex num1,num2,mul,Zero(0,0);
cout<<"乘法计算\n"<<"最少输入两个复数,并且以零结束\n";
cout<<"第一个复数:";
cin>>num1;
cout<<"第二个复数:";
cin>>num2;
mul=num1*num2;
cout<<"第三个复数:";
cin>>num1;
int i=4;
while(!(num1==Zero))
{
mul*=num1;
cout<<"第"<<i<<"个复数:";
cin>>num1;
i++;
}
cout<<"乘法结果是:"<<mul<<endl;
cout<<"请按任意键继续\n";
cout.flush();
cin.get();
cin.get();
}
void Add1()
{
user.nAdd ++;
CComplex num1;
cin>>num1;
++num1;
cout<<"自加的结果为"<<num1<<endl;
cout<<"按任意键结束\n";
cout.flush();
cin.get();
cin.get();
}
void Sub1() //复数自加运算函数
{
user.nSub++;
CComplex num1;
cin>>num1;
--num1;
cout<<"自减的结果为"<<num1<<endl;
cout<<"按任意键结束\n";
cout.flush();
cin.get();
cin.get();
}
void compare() //两复数比较函数
{
CComplex num1,num2;
cout<<"输入两个复数\n";
cout<<"第一个复数:";
cin>>num1;
cout<<"输入第二个复数\n";
cin>>num2;
if(num1==num2)
cout<<"这两个复数相等\n";
else if(num1>num2)
cout<<num1<<"的模大于"<<num2<<"的模\n";
else if(num1<num2)
cout<<num2<<"的模大于"<<num1<<"的模\n";
else
cout<<"这两个复数的模相等\n";
cout<<"按任意键继续\n";
cin.get();
cin.get();
}
void userprint() //输出用户信息函数
{
cout<<user.szName<<"使用的次数为:"<<user.nTime<<endl;
cout<<"其中:\t加法的次数:"<<user.nAdd<<"\t减法的次数:"<<user.nSub<<"\t乘法的次数:"<<user.nMul<<endl;

cout<<"\t测试次数:"<<user.nTest<<"\t平均成绩:"<<user.alAve<<endl;
}
void Login() //当前用户信息函数
{
char szName[20];
cout<<"请输入您的姓名:";
cin.getline(szName,20);
ifstream infile;
User user1;
infile.open("user.dat",ios::binary|ios::in);
if(!infile)
{
cout<<"没有原始记录文件，您是第一个用户!\n";
strcpy(user.szName,szName);
user.nTest++;
return;
}
infile.read((char *)&user1,sizeof(User));
while(!infile.eof())
{
if(strcmp(user1.szName,szName)==0)
{
user=user1;
user.nTime++;
cout<<"欢迎您再次使用复数计算器!";
userprint();
cin.get();
infile.close();
return;
}
infile.read((char *) &user1,sizeof(User));
}
cout<<"欢迎您再次使用复数计算器!";
strcpy(user.szName,szName);
user.nTime++;
infile.close();
return;
}
void SaveFile() //用户资料保存函数
{
userprint();
fstream file;
User user1;
file.open("user.dat",ios::binary|ios::in|ios::out);
if(!file)
{
cout<<"文件打开错误，不能进行更新!\n";
return;
}
file.seekp(0,ios::beg);
while(!file.eof())
{
file.read((char *)&user1,sizeof(User));
if(strcmp(user1.szName,user.szName)==0)
{
file.seekp(-(sizeof(User)),ios::cur);
file.write((char *)&user,sizeof(User));
file.close();
return;
}
}
file.close();
fstream outfile;
outfile.open("user.dat",ios::binary|ios::app);
outfile.write((char *)&user,sizeof(User));
outfile.close();
return;
}
}
using namespace NameCComplex;
int main(void) //主函数开始
{
srand(time(NULL)); //初始化随机数“种子”语句
Login(); //当前用户信息函数
char strChoise[20]; //定义字符串名
do
{
system("cls");
cout<<"\t这是一个简单的复数计算器程序，可以实现以下功能，请按对应的按键(1-7)\n\n\n";
cout<<"\t=========================MENU===========================\n";
cout<<"\t1:多复数加法，以0结束\n";
cout<<"\t2:多复数减法，以0结束\n";
cout<<"\t3:测试100以内的复数加减乘法运算，1次测试10道题\n";
cout<<"\t4:多复数乘法，以0结束\n";
cout<<"\t5:复数自加\n:";
cout<<"\t6:复数自减\n:";
cout<<"\t7:复数比较\n:";
cout<<"\t0:退出程序\n\n:";
cout<<"\t请您选择:";
cin>>strChoise;
if(strcmp(strChoise,"1")==0) //用户选1则调用Add()函数
Add();
else if(strcmp(strChoise,"2")==0) //用户选2则调用Sub()函数
Sub();
else if(strcmp(strChoise,"3")==0) //用户选3则调用Test()函数
Test();
else if(strcmp(strChoise,"4")==0) //用户选4则调用Add()函数
Mul();
else if(strcmp(strChoise,"5")==0) //用户选5调用Add1()函数
Add1();
else if(strcmp(strChoise,"6")==0) //用户选6则调用Sub1()函数
Sub1();
else if(strcmp(strChoise,"7")==0) //用户选7则调用Compare()函数
compare();
else if(strcmp(strChoise,"0")==0) //用户选0则结束调用函数
{
cout<<"\n\n\t欢迎下次继续使用复数计算器!\n\n";
break;
}
else
{
cout<<"\n\t输入错误，请按任意键继续!\n";
cin.get();
cin.get();
}
}
while((strcmp(strChoise,"0")));
SaveFile(); //调用用户资料保存函数
return 0;
}

→_→快看哭了。

喜闻乐见。