为了实现你想要的输出格式,你可以在 __str__ 方法中添加一个条件判断,以便在虚部为负数时显示减号。以下是修改后的 __str__ 方法:
def __str__(self):
sign = '+' if self.imag >= 0 else '-'
return f'{self.real:.2f} {sign} {abs(self.imag):.2f}i'
现在,当虚部为负数时,输出将显示减号。这是修改后的完整代码:
class ComplexNumber:
def __init__(self, real, imag):
self.real = real
self.imag = imag
def __add__(self, other):
return ComplexNumber(self.real + other.real, self.imag + other.imag)
def __sub__(self, other):
return ComplexNumber(self.real - other.real, self.imag - other.imag)
def __mul__(self, other):
real_part = self.real * other.real - self.imag * other.imag
imag_part = self.real * other.imag + self.imag * other.real
return ComplexNumber(real_part, imag_part)
def __truediv__(self, other):
denominator = other.real[b]2 + other.imag[/b]2
real_part = (self.real * other.real + self.imag * other.imag) / denominator
imag_part = (self.imag * other.real - self.real * other.imag) / denominator
return ComplexNumber(real_part, imag_part)
def __str__(self):
sign = '+' if self.imag >= 0 else '-'
return f'{self.real:.2f} {sign} {abs(self.imag):.2f}i'
# Example usage
c1 = ComplexNumber(1, 2)
c2 = ComplexNumber(3, -4)
print(c1 + c2) # Output: '4.00 - 2.00i'
print(c1 - c2) # Output: '-2.00 + 6.00i'
print(c1 * c2) # Output: '11.00 + 2.00i'
print(c1 / c2) # Output: '-0.20 + 0.40i'
现在,你应该得到了期望的输出结果:
4.00 - 2.00i
·2.00 + 6.00i
11.00 + 2.00i
·0.20 + 0.40i
请注意,本回答来自GPT-4
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