TA貢獻(xiàn)1817條經(jīng)驗(yàn) 獲得超14個(gè)贊
#ifndef COMPLEX_H
#define COMPLEX_H
#include <iostream>
#include <iomanip>
class Complex
{
public:
Complex(double _real,double _imag = 0.0):real(_real),imag(_imag){} //構(gòu)造函數(shù)，初始化列表和默認(rèn)參數(shù)
Complex(std::istream &is){is >> *this;}; //輸入構(gòu)造函數(shù)，調(diào)用自身的>>操作符
void SetReal(double _real); //更改實(shí)部的值
void SetImag(double _imag); //更改虛部的值
void SetVal(double _real,double _imag); //更改整個(gè)復(fù)數(shù)
inline double GetReal() const; //獲取實(shí)部，常成員函數(shù)
inline double GetImag() const; //獲取虛部，常成員函數(shù)
Complex& operator+=(const Complex &val); //成員操作符+=
Complex& operator*=(const Complex &val); //成員操作符-=
friend bool operator==(const Complex &lhs,const Complex &rhs); //友元函數(shù)，需訪問私有數(shù)據(jù)
friend std::istream& operator>>(std::istream &,Complex &); //友元輸入操作符，需私有數(shù)據(jù)
friend std::ostream& operator<<(std::ostream &,const Complex &); //友元輸出操作符，需私有數(shù)據(jù)
private:
double real;
double imag;
};
Complex operator+(const Complex &lhs, const Complex &rhs); //普通函數(shù)，實(shí)現(xiàn)兩個(gè)復(fù)數(shù)+操作
Complex operator*(const Complex &lhs, const Complex &rhs); //普通函數(shù)，實(shí)現(xiàn)兩個(gè)復(fù)數(shù)*操作
//========================分割線，此線上面為定義代碼，此線下面是實(shí)現(xiàn)代碼===============================
inline bool operator==(const Complex &lhs,const Complex &rhs)
{
return (lhs.real == rhs.real) && (lhs.imag == rhs.imag);
}
inline bool operator!=(const Complex &lhs,const Complex &rhs)
{
return !(lhs==rhs);
}
inline Complex& Complex::operator+=(const Complex &val)
{
real += val.real;
imag += val.imag;
return *this;
}
inline Complex operator+(const Complex &lhs,const Complex &rhs)
{
Complex ret(lhs);
ret += rhs;
return ret;
}
inline Complex& Complex::operator*=(const Complex &val)
{
double tReal = real;
double tImag = imag;
real = tReal*val.real - tImag*val.imag;
imag = tReal*val.imag + tImag*val.real;
return *this;
}
inline Complex operator*(const Complex &lhs,const Complex &rhs)
{
Complex ret(lhs);
ret *= rhs;
return ret;
}
inline std::istream& operator>>(std::istream &is,Complex &com)
{
std::cout << "請(qǐng)輸入實(shí)數(shù)部分：" ;
is >> com.real;
if(is)
{
std::cout << "請(qǐng)輸入虛數(shù)部分：" ;
is >> com.imag;
if(is)
{
return is;
}
else
{
com = Complex(0.0);
}
}
else
{
com = Complex(0.0);
}
return is;
}
inline std::ostream& operator<<(std::ostream &os, const Complex &com)
{
os << "復(fù)數(shù)為：" << com.real << std::showpos << com.imag << "i" << std::endl;
return os;
}
inline double Complex::GetReal() const
{
return real;
}
inline double Complex::GetImag() const
{
return imag;
}
void Complex::SetReal(double _real)
{
real = _real;
}
void Complex::SetImag(double _imag)
{
imag = _imag;
}
void Complex::SetVal(double _real,double _imag)
{
real = _real;
imag = _imag;
}
#endif
TA貢獻(xiàn)1911條經(jīng)驗(yàn) 獲得超7個(gè)贊
只實(shí)現(xiàn)了要求的基本加減乘除供參考
#include <iostream>using namespace std; class complex {public: complex(double r = 0, double i = 0):real(r), imaginary(i){} complex operator+(complex &a) { complex t(*this); t.real += a.real; t.imaginary += a.imaginary; return t; } complex operator-(complex &a) { complex t(*this); t.real -= a.real; t.imaginary -= a.imaginary; return t; } complex operator*(complex &a) { complex t; t.real = a.real*real - a.imaginary*imaginary; t.imaginary = a.real*imaginary + a.imaginary*real; return t; } complex operator/(complex &a) { complex t, t1(a); double div; t1.imaginary*= -1; div = a.real*a.real - a.imaginary * a.imaginary; t = a * *this; t.real /= div; t.imaginary /= div; return t; } friend ostream &operator << (ostream & out, const complex & a);private: double real, imaginary;}; ostream &operator << (ostream & out, const complex & a){ out << '(' << a.real; if(a.imaginary>0) out<<'+'; out << a.imaginary << "i)"; return out;}int main(){ complex a(1,2), b(3,4); cout << a << '+' << b << '=' << a+b<< endl; cout << a << '-' << b << '=' << a-b<< endl; cout << a << '*' << b << '=' << a*b<< endl; cout << a << '/' << b << '=' << a/b<< endl;} |
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