设计一个可进行复数运算的演示程序。要求实现下列6种基本运算： （1）由输入的实部和虚部生成一个复数。 （2）两个复数求和。 （3）两个复数求差 （4)两个复数求积 （5）从已知复数中分离出实部。 （6）从已知复数中分离出虚部

以下是Python实现的示例代码：

class ComplexNumber:
def __init__(self, real, imaginary):
self.real = real
self.imaginary = imaginary

def __add__(self, other):
return ComplexNumber(self.real + other.real, self.imaginary + other.imaginary)

def __sub__(self, other):
return ComplexNumber(self.real - other.real, self.imaginary - other.imaginary)

def __mul__(self, other):
return ComplexNumber(self.real * other.real - self.imaginary * other.imaginary, self.real * other.imaginary + self.imaginary * other.real)

def get_real(self):
return self.real

def get_imaginary(self):
return self.imaginary

def __str__(self):
return "{} + {}i".format(self.real, self.imaginary)

# 测试样例
c1 = ComplexNumber(2, 3)
c2 = ComplexNumber(4, -5)

print("c1 =", c1)
print("c2 =", c2)
print("c1 + c2 =", c1 + c2)
print("c1 - c2 =", c1 - c2)
print("c1 * c2 =", c1 * c2)
print("real part of c1 =", c1.get_real())
print("imaginary part of c1 =", c1.get_imaginary())