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C++计算复数
2023-06-30 08:01:10 深夜i     --     --
C++ 计算 复数

C++是一门强大的编程语言,它支持计算各种各样的数学运算,包括复数运算。复数是由实数和虚数组成的数值形式,可以表示为“a+bi”的形式,其中a和b都是实数,b带有负号。

在C++中,可以使用结构体来表示复数,以下是一个示例:


struct complex_number

  double real;

  double imaginary;

;

在上述结构体中,我们定义了一个复数类型,其中包含了实数部分和虚数部分。接下来,我们可以使用不同的运算符来执行各种操作,例如加减乘除运算、求模、求幅角等等。

下面给出一个完整的C++复数计算的示例程序:


#include <iostream>

#include <cmath>

using namespace std;

struct complex_number

  double real;

  double imaginary;

;

complex_number add_complex(complex_number a, complex_number b) {

  complex_number result;

  result.real = a.real + b.real;

  result.imaginary = a.imaginary + b.imaginary;

  return result;

}

complex_number sub_complex(complex_number a, complex_number b)

  complex_number result;

  result.real = a.real - b.real;

  result.imaginary = a.imaginary - b.imaginary;

  return result;

complex_number mul_complex(complex_number a, complex_number b) {

  complex_number result;

  result.real = a.real * b.real - a.imaginary * b.imaginary;

  result.imaginary = a.real * b.imaginary + a.imaginary * b.real;

  return result;

}

complex_number div_complex(complex_number a, complex_number b) {

  complex_number result;

  double denominator = b.real * b.real + b.imaginary * b.imaginary;

  result.real = (a.real * b.real + a.imaginary * b.imaginary) / denominator;

  result.imaginary = (b.real * a.imaginary - a.real * b.imaginary) / denominator;

  return result;

}

double abs_complex(complex_number a) {

  return sqrt(a.real * a.real + a.imaginary * a.imaginary);

}

double arg_complex(complex_number a) {

  return atan2(a.imaginary, a.real);

}

int main() {

  complex_number a, b;

  cout << "请输入第一个复数(实数和虚数部分之间以空格分隔):" << endl;

  cin >> a.real >> a.imaginary;

  cout << "请输入第二个复数(实数和虚数部分之间以空格分隔):" << endl;

  cin >> b.real >> b.imaginary;

  cout << "两个复数的和为: " << add_complex(a, b).real << " + " << add_complex(a, b).imaginary << "i" << endl;

  cout << "两个复数的差为: " << sub_complex(a, b).real << " + " << sub_complex(a, b).imaginary << "i" << endl;

  cout << "两个复数的积为: " << mul_complex(a, b).real << " + " << mul_complex(a, b).imaginary << "i" << endl;

  cout << "两个复数的商为: " << div_complex(a, b).real << " + " << div_complex(a, b).imaginary << "i" << endl;

  cout << "第一个复数的模为: " << abs_complex(a) << endl;

  cout << "第一个复数的幅角为: " << arg_complex(a) << endl;

  cout << "第二个复数的模为: " << abs_complex(b) << endl;

  cout << "第二个复数的幅角为: " << arg_complex(b) << endl;

  return 0;

}

上述程序实现了复数的加减乘除、求模和求幅角等运算。用户可以输入两个复数,程序将会计算并输出结果。

总之,C++可以方便地进行复数计算,只需定义一个结构体来表示复数类型和使用适当的运算符即可完成各种运算。

  
  

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