YTUOJ——複數類--過載運算子+,-,*,/
阿新 • • 發佈：2018-12-17
#include <iostream> #include <iomanip> using namespace std; class Complex { public: Complex(); Complex(double r,double i); Complex operator+(Complex &c2); Complex operator-(Complex &c2); Complex operator*(Complex &c2); Complex operator/(Complex &c2); void display(); private: double real; double imag; }; Complex::Complex(){} Complex::Complex(double r,double i){ real = r; imag = i; } Complex Complex::operator+(Complex &c2) { Complex c; c.real=real+c2.real; c.imag=imag+c2.imag; return c; } Complex Complex::operator-(Complex &c2) { Complex c; c.real=real-c2.real; c.imag=imag-c2.imag; return c; } Complex Complex::operator*(Complex &c2) { Complex c; c.real=real*c2.real-imag*c2.imag; c.imag=imag*c2.real+real*c2.imag; return c; } Complex Complex::operator/(Complex &c2) { Complex c; c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag); c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag); return c; } void Complex::display() { cout<<"("<<real<<","<<imag<<"i)"<<endl; } //主函式已給定如下，提交時不需要包含，會自動新增到程式尾部 /* C++程式碼 */ int main() { double real,imag; cin>>real>>imag; Complex c1(real,imag); cin>>real>>imag; Complex c2(real,imag); cout<<setiosflags(ios::fixed); cout<<setprecision(2); Complex 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; }
題目描述
定義一個複數類Complex，過載運算子“+”,“-”,“*”,“/”，使之能用於複數的加、減、乘、除。運算子過載函式作為Complex類的成員函式。編寫程式，分別求兩個複數之和、差、積和商。
輸入
兩個複數
輸出
兩個複數之和、差、積和商
樣例輸入
3 4
5 -10樣例輸出
c1+c2=(8.00,-6.00i)
c1-c2=(-2.00,14.00i)
c1*c2=(55.00,-10.00i)
c1/c2=(-0.20,0.40i)提示
前置程式碼及型別定義已給定如下，提交時不需要包含，會自動新增到程式前部
/* C++程式碼 */ #include <iostream> #include <iomanip> using namespace std; class Complex { public: Complex(); Complex(double r,double i); Complex operator+(Complex &c2); Complex operator-(Complex &c2); Complex operator*(Complex &c2); Complex operator/(Complex &c2); void display(); private: double real; double imag; };
主函式已給定如下，提交時不需要包含，會自動新增到程式尾部
/* C++程式碼 */ int main() { double real,imag; cin>>real>>imag; Complex c1(real,imag); cin>>real>>imag; Complex c2(real,imag); cout<<setiosflags(ios::fixed); cout<<setprecision(2); Complex 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; }
答案
#include <iostream>
#include <iomanip>
using namespace std;
class Complex
{
public:
Complex();
Complex(double r,double i);
Complex operator+(Complex &c2);
Complex operator-(Complex &c2);
Complex operator*(Complex &c2);
Complex operator/(Complex &c2);
void display();
private:
double real;
double imag;
};
Complex::Complex(){}
Complex::Complex(double r,double i){
real = r;
imag = i;
}
Complex Complex::operator+(Complex &c2) {
Complex c;
c.real=real+c2.real;
c.imag=imag+c2.imag;
return c;
}
Complex Complex::operator-(Complex &c2) {
Complex c;
c.real=real-c2.real;
c.imag=imag-c2.imag;
return c;
}
Complex Complex::operator*(Complex &c2) {
Complex c;
c.real=real*c2.real-imag*c2.imag;
c.imag=imag*c2.real+real*c2.imag;
return c;
}
Complex Complex::operator/(Complex &c2) {
Complex c;
c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
return c;
}
void Complex::display() {
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
//主函式已給定如下，提交時不需要包含，會自動新增到程式尾部
/* C++程式碼 */
int main()
{
double real,imag;
cin>>real>>imag;
Complex c1(real,imag);
cin>>real>>imag;
Complex c2(real,imag);
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
Complex 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;
}