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法律研究C++编程中的复数
本部分将介绍如何在C++中创建和使用复数。我们可以在C++中创建复数类型类，该类可作为复数的成员元素保存实部和虚部。该类中会有一些用于处理此类的成员函数。
在本示例中，我们将创建一个复数类，一个函数以正确格式显示复数。另有两种方法用于加法和减法复数等。
示例
#include<iostream>
using namespace std;
class complex{
int real, img;
public:
complex(){
//default constructor to initialize complex number to 0+0i
real = 0; img = 0;
}
complex(int r, int i){
//parameterized constructor to initialize complex number.
real = r; img = i;
}
void set();
void get();
void display();
friend complex add(complex, complex);
friend complex sub(complex, complex);
};
void complex::set(){
cout << "Enter Real part: ";
cin >> real;
cout << "Enter Imaginary Part: ";
cin >> img;
}
void complex::get(){
cout << "The complex number is: "<< real << "+" << img << "i" << endl;
}
void complex::display(){
if(img < 0)
if(img == -1)
cout << "The complex number is: "<< real << "-i" << endl;
else
cout << "The complex number is: "<< real << img << "i" << endl;
else
if(img == 1)
cout << "The complex number is: "<< real << " + i"<< endl;
else
cout << "The complex number is: "<< real << " + " << img << "i" << endl;
}
complex add(complex c1, complex c2){
complex res;
res.real = c1.real + c2.real;//addition for real part
res.img = c1.img + c2.img;//addition for imaginary part
return res;//the result after addition
}
complex sub(complex c1, complex c2){
complex res;
res.real = c1.real - c2.real;//subtraction for real part
res.img = c1.img - c2.img;//subtraction for imaginary part
return res;//the result after subtraction
}
main(){
complex n1(3, 2), n2(4, -3);
complex result;
result = add(n1,n2);
result.display();
result = sub(n1,n2);
result.display();
}输出
The complex number is: 7-i The complex number is: -1 + 5i
更新日期：2019-12-18
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