在C++中，你可以使用类模板来创建一个自定义的复数类
#include <iostream>#include <cmath>template <typename T>class Complex {public: // 构造函数 Complex(T real, T imag) : real_(real), imag_(imag) {} // 获取实部和虚部 T real() const { return real_; } T imag() const { return imag_; } // 加法 Complex<T> operator+(const Complex<T>& other) const { return Complex<T>(real_ + other.real_, imag_ + other.imag_); } // 减法 Complex<T> operator-(const Complex<T>& other) const { return Complex<T>(real_ - other.real_, imag_ - other.imag_); } // 乘法 Complex<T> operator*(const Complex<T>& other) const { T real_part = real_ * other.real_ - imag_ * other.imag_; T imag_part = real_ * other.imag_ + imag_ * other.real_; return Complex<T>(real_part, imag_part); } // 除法 Complex<T> operator/(const Complex<T>& other) const { T denominator = other.real_ * other.real_ + other.imag_ * other.imag_; T real_part = (real_ * other.real_ + imag_ * other.imag_) / denominator; T imag_part = (imag_ * other.real_ - real_ * other.imag_) / denominator; return Complex<T>(real_part, imag_part); }private: T real_; T imag_;};int main() { Complex<double> c1(3, 4); Complex<double> c2(1, 2); Complex<double> sum = c1 + c2; Complex<double> diff = c1 - c2; Complex<double> prod = c1 * c2; Complex<double> quot = c1 / c2; std::cout << "Sum: " << sum.real() << " + " << sum.imag() << "i\n"; std::cout << "Difference: " << diff.real() << " + " << diff.imag() << "i\n"; std::cout << "Product: " << prod.real() << " + " << prod.imag() << "i\n"; std::cout << "Quotient: " << quot.real() << " + " << quot.imag() << "i\n"; return 0;}这个例子展示了如何创建一个名为Complex的类模板，它可以用于表示复数。这个类模板包含了复数的基本操作，如加法、减法、乘法和除法。在main函数中，我们创建了两个复数对象c1和c2，并执行了这些操作。
