C++ 中的複數
在本節中,我們將瞭解如何在 C++ 中建立和使用複數。我們可以在 C++ 中建立複數類,其中可以將複數的實部和虛部作為成員元素保留下來。有些成員函式用於處理該類。
在此示例中,我們建立了一個特定型別的複數類,有一個函式可以將複數顯示為正確的格式。還有兩種附加的方法可用於新增和減去兩個複數等。
範例
#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(); }
輸出
The complex number is: 7-i The complex number is: -1 + 5i
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