Complex Number Class in C++

This is a simple implementation of a complex number class in C++. It includes basic operations such as addition, subtraction, multiplication, and division of complex numbers, as well as compound assignment operators.

How to use

To use the complex number class, you need to include the ComplexNumber.h header file in your C++ code. The header file includes the definition of the ComplexNumber class, which has the following public member functions:

ComplexNumber() - default constructor, initializes the real and imaginary parts to zero.
ComplexNumber(double r, double i) - constructor that takes two parameters, the real and imaginary parts of the complex number.
double getReal() - returns the real part of the complex number.
double getImaginary() - returns the imaginary part of the complex number.
void setReal(double r) - sets the real part of the complex number to the given value.
void setImaginary(double i) - sets the imaginary part of the complex number to the given value.
ComplexNumber operator+(ComplexNumber c) - returns the sum of the complex number and the given complex number c.
ComplexNumber operator-(ComplexNumber c) - returns the difference between the complex number and the given complex number c.
ComplexNumber operator*(ComplexNumber c) - returns the product of the complex number and the given complex number c.
ComplexNumber operator/(ComplexNumber c) - returns the quotient of the complex number and the given complex number c.
ComplexNumber operator+=(ComplexNumber c) - adds the given complex number c to the complex number and returns the result.
ComplexNumber operator-=(ComplexNumber c) - subtracts the given complex number c from the complex number and returns the result.
ComplexNumber operator*=(ComplexNumber c) - multiplies the complex number by the given complex number c and returns the result.
ComplexNumber operator/=(ComplexNumber c) - divides the complex number by the given complex number c and returns the result.

Usage example

Here is an example program that creates two complex numbers and performs arithmetic operations between them:

Main Code

int main() {
    ComplexNumber c1(3, 2);
    ComplexNumber c2(1, 7);

    std::cout << "c1: " << c1.getReal() << " + " << c1.getImaginary() << "i" << std::endl;
    std::cout << "c2: " << c2.getReal() << " + " << c2.getImaginary() << "i" << std::endl;

    ComplexNumber sum = c1 + c2;
    std::cout << "Sum        : " << sum.getReal() << " + " << sum.getImaginary() << "i" << std::endl;

    ComplexNumber diff = c1 - c2;
    std::cout << "Difference : " << diff.getReal() << " + " << diff.getImaginary() << "i" << std::endl;

    ComplexNumber product = c1 * c2;
    std::cout << "Product    : " << product.getReal() << " + " << product.getImaginary() << "i" << std::endl;

    ComplexNumber quotient = c1 / c2;
    std::cout << "Quotient   : " << quotient.getReal() << " + " << quotient.getImaginary() << "i" << std::endl;
}

Output

c1: 3 + 2i
c2: 1 + 7i
Sum        : 4 + 9i
Difference : 2 - 5i
Product    : -11 + 23i
Quotient   : 0.488889 + -0.133333i

License