如何:使用运算符重载创建复数类(C# 编程指南)
本示例展示如何使用运算符重载创建定义复数加法的复数类 Complex
。本程序使用 ToString 方法的重载显示数字的虚部和实部以及加法结果。
示例
public struct Complex
{
public int real;
public int imaginary;
public Complex(int real, int imaginary) //constructor
{
this.real = real;
this.imaginary = imaginary;
}
// Declare which operator to overload (+),
// the types that can be added (two Complex objects),
// and the return type (Complex):
public static Complex operator +(Complex c1, Complex c2)
{
return new Complex(c1.real + c2.real, c1.imaginary + c2.imaginary);
}
// Override the ToString() method to display a complex number in the traditional format:
public override string ToString()
{
return (System.String.Format("{0} + {1}i", real, imaginary));
}
}
class TestComplex
{
static void Main()
{
Complex num1 = new Complex(2, 3);
Complex num2 = new Complex(3, 4);
// Add two Complex objects through the overloaded plus operator:
Complex sum = num1 + num2;
// Print the numbers and the sum using the overriden ToString method:
System.Console.WriteLine("First complex number: {0}", num1);
System.Console.WriteLine("Second complex number: {0}", num2);
System.Console.WriteLine("The sum of the two numbers: {0}", sum);
}
}
输出
First complex number: 2 + 3i Second complex number: 3 + 4i The sum of the two numbers: 5 + 7i