C++ 小型复数计算器.doc

#includeiostream#includecmath#includecstdlib#includecstring#includefstream#includectime#define EPS 1e-5 //定义精度常数using namespace std; //使用标准空间命名stdnamespace 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);};struct User //用户结构体类型定义{char szName[20]; //用户名int nTime; //使用次数int nTest; //测试次数double alAve; //平均成绩int nAdd; //加法次数int nSub; //减法次数int nMul; //乘法次数double dlScore[3]; //3次测试得分}user; //定义全局变量CComplex CComplex::operator++() //重载运算符++，实部与虚部均加1{Real++;Image++;return *this;}CComplex CComplex::operator--() //重载运算符--，实部与虚部均减1{Real--;Image--;return *this;}double CComplex::mod() //求复数的模的平方，返回实部^2+虚部^2{return Real*Real+Image*Image;}int CComplex::operator(CComplex com) //重载运算符，比较模的大小{if(mod()com.mod())return 1;elsereturn 0;}int CComplex::operator(CComplex com){if(mod()com.mod())return 1; //若大，则返回1elsereturn 0;}int CComplex::operator!=(CComplex com)//重载运算符！=，分别判断复数的实部和虚部{if(*this==com)return 0;elsereturn 1;}istream operator(istream is,CComplex com) //重载输入，可以输入a+bi的形式{cout请输入复数:;char s[80];iss; //用字符串的形式接受复数int len=strlen(s); //求出字符串的长度int n=0,sign=1;//n为当前从字符串中提取出来的数字，初始化为0；sign是难道符号，初始化为正com.Image=com.Real=0;for(int k=0;klen;k++) //判断接受的字符串是否合法{if((s[k]0 || s[k] 9) (s[k]!=+ s[k]!=- s[k]!=i)){couterrorendl;ret