(1)请用类的成员函数,定义复数类重载运算符+、-、*、/,使之能用于复数的加减乘除。
#include <iostream> using namespace std; class Complex { public: Complex(){real=0;imag=0;} Complex(double r,double i){real=r; imag=i;} Complex operator+(const Complex &c2); Complex operator-(const Complex &c2); Complex operator*(const Complex &c2); Complex operator/(const Complex &c2); void display(); private: double real; double imag; }; //下面定义成员函数 Complex Complex::operator+(const Complex &c2) { Complex a; a.real=real+c2.real; a.imag=imag+c2.imag; return a; } Complex Complex::operator-(const Complex &c2) { Complex a; a.real=real-c2.real; a.imag=imag-c2.imag; return a; } Complex Complex::operator*(const Complex &c2) { Complex a; a.real=real*c2.real; a.imag=imag*c2.imag; return a; } Complex Complex::operator/(const Complex &c2) { Complex a; a.real=real/c2.real; a.imag=imag/c2.imag; return a; } void Complex::display() { cout<<"("<<real<<","<<imag<<"i)"<<endl; } //下面定义用于测试的main()函数 int main() { Complex c1(3,4),c2(5,-10),c3; cout<<"c1="; c1.display(); cout<<"c2="; c2.display(); c3=c1+c2; cout<<"c1+c2="; c3.display(); c3=c1-c2; cout<<"c1-c2="; c3.display(); c3=c1*c2; cout<<"c1*c2="; c3.display(); c3=c1/c2; cout<<"c1/c2="; c3.display(); return 0; }
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(2)请用类的友元函数,而不是成员函数,再次完成上面提及的运算符的重载。
#include <iostream> using namespace std; class Complex { public: Complex(){real=0;imag=0;} Complex(double r,double i){real=r; imag=i;} friend Complex operator+(Complex &c1,Complex &c2); friend Complex operator-(Complex &c1,Complex &c2); friend Complex operator*(Complex &c1,Complex &c2); friend Complex operator/(Complex &c1,Complex &c2); void display(); private: double real; double imag; }; //下面定义成员函数 Complex operator+(Complex &c1,Complex &c2) { Complex a; a.real=c1.real+c2.real; a.imag=c1.imag+c2.imag; return a; } Complex operator-(Complex &c1,Complex &c2) { Complex a; a.real=c1.real-c2.real; a.imag=c1.imag-c2.imag; return a; } Complex operator*(Complex &c1,Complex &c2) { Complex a; a.real=c1.real*c2.real; a.imag=c1.imag*c2.imag; return a; } Complex operator/(Complex &c1,Complex &c2) { Complex a; a.real=c1.real/c2.real; a.imag=c1.imag/c2.imag; return a; } void Complex::display() { cout<<"("<<real<<","<<imag<<"i)"<<endl; } //下面定义用于测试的main()函数 int main() { Complex c1(3,4),c2(5,-10),c3; cout<<"c1="; c1.display(); cout<<"c2="; c2.display(); c3=c1+c2; cout<<"c1+c2="; c3.display(); c3=c1-c2; cout<<"c1-c2="; c3.display(); c3=c1*c2; cout<<"c1*c2="; c3.display(); c3=c1/c2; cout<<"c1/c2="; c3.display(); return 0; }
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时间: 2024-10-12 14:18:06