■ 복소수 사용하기
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TestProject.zip▶ Complex.cs
using System;
namespace TestProject { /// <summary> /// 복소수 /// </summary> public class Complex { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public
#region Field
/// <summary> /// 실수 /// </summary> public double Real = 0;
/// <summary> /// 허수 /// </summary> public double Imaginary = 0;
#endregion
//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public
#region 생성자 - Complex(real, imaginary)
/// <summary> /// 생성자 /// </summary> /// <param name="real">실수</param> /// <param name="imaginary">허수</param> public Complex(double real, double imaginary) { Real = real; Imaginary = imaginary; }
#endregion #region 생성자 - Complex(real)
/// <summary> /// 생성자 /// </summary> /// <param name="real">실수</param> public Complex(double real) : this(real, 0) { }
#endregion
//////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public
#region 파싱하기 - Parse(text)
/// <summary> /// 파싱하기 /// </summary> /// <param name="text">텍스트</param> /// <returns>복소수</returns> public static Complex Parse(string text) { text = text.Replace(" ", ""); text = text.ToLower().Replace("i", "");
char[] signArray = { '+', '-' };
int position = text.IndexOfAny(signArray);
if(position == 0) { position = text.IndexOfAny(signArray, 1); }
double real = double.Parse(text.Substring(0, position)); double imaginary = double.Parse(text.Substring(position));
return new Complex(real, imaginary); }
#endregion
#region - 연산자 재정의하기 - -(complex)
/// <summary> /// - 연산자 재정의하기 /// </summary> /// <param name="complex">복소수</param> /// <returns>복소수</returns> public static Complex operator -(Complex complex) { return new Complex(-complex.Real, -complex.Imaginary); }
#endregion #region + 연산자 재정의하기 - +(a, b)
/// <summary> /// + 연산자 재정의하기 /// </summary> /// <param name="a">복소수 A</param> /// <param name="b">복소수 B</param> /// <returns>복소수</returns> public static Complex operator +(Complex a, Complex b) { return new Complex(a.Real + b.Real, a.Imaginary + b.Imaginary); }
#endregion #region - 연산자 재정의하기 - -(a, b)
/// <summary> /// - 연산자 재정의하기 /// </summary> /// <param name="a">복소수 A</param> /// <param name="b">복소수 B</param> /// <returns>복소수</returns> public static Complex operator -(Complex a, Complex b) { return a + (-b); }
#endregion #region * 연산자 재정의하기 - *(a, b)
/// <summary> /// * 연산자 재정의하기 /// </summary> /// <param name="a">복소수 A</param> /// <param name="b">복소수 B</param> /// <returns>복소수</returns> public static Complex operator *(Complex a, Complex b) { return new Complex ( a.Real * b.Real - a.Imaginary * b.Imaginary, a.Real * b.Imaginary + a.Imaginary * b.Real ); }
#endregion #region / 연산자 재정의하기 - /(a, b)
/// <summary> /// / 연산자 재정의하기 /// </summary> /// <param name="a">복소수 A</param> /// <param name="b">복소수 B</param> /// <returns>복소수</returns> public static Complex operator /(Complex a, Complex b) { Complex conjugate = new Complex(b.Real, -b.Imaginary);
b *= conjugate;
Complex numerator = a * conjugate;
return new Complex ( numerator.Real / b.Real, numerator.Imaginary / b.Real ); }
#endregion
#region == 연산자 재정의하기 - ==(a, b)
/// <summary> /// == 연산자 재정의하기 /// </summary> /// <param name="a">복소수 A</param> /// <param name="b">복소수 B</param> /// <returns>비교 결과</returns> public static bool operator ==(Complex a, Complex b) { if(Object.ReferenceEquals(a, b)) { return true; }
if(((object)a == null) || ((object)b == null)) { return false; }
return a.Equals(b); }
#endregion #region != 연산자 재정의하기 - !=(a, b)
/// <summary> /// != 연산자 재정의하기 /// </summary> /// <param name="a">복소수 A</param> /// <param name="b">복소수 B</param> /// <returns>비교 결과</returns> public static bool operator !=(Complex a, Complex b) { return !(a == b); }
#endregion
#region 묵시적 변환하기 - Complex(real)
/// <summary> /// 묵시적 변환하기 /// </summary> /// <param name="real">실수</param> public static implicit operator Complex(double real) { return new Complex(real); }
#endregion
////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Public
#region 문자열 구하기 - ToString()
/// <summary> /// 문자열 구하기 /// </summary> /// <returns>문자열</returns> public override string ToString() { if(Imaginary < 0) { return Real.ToString() + " - " + Math.Abs(Imaginary).ToString() + "i"; } else { return Real.ToString() + " + " + Imaginary.ToString() + "i"; } }
#endregion #region 문자열 구하기 - ToString(format)
/// <summary> /// 문자열 구하기 /// </summary> /// <param name="format">포맷 문자열</param> /// <returns>문자열</returns> public string ToString(string format) { if(Imaginary < 0) { return Real.ToString(format) + " - " + Math.Abs(Imaginary).ToString(format) + "i"; } else { return Real.ToString(format) + " + " + Imaginary.ToString(format) + "i"; } }
#endregion
#region 동일 여부 구하기 - Equals(b)
/// <summary> /// 동일 여부 구하기 /// </summary> /// <param name="b">복소수 B</param> /// <returns>동일 여부</returns> public bool Equals(Complex b) { if((object)b == null) { return false; }
return ((this.Real == b.Real) && (this.Imaginary == b.Imaginary)); }
#endregion #region 동일 여부 구하기 - Equals(sourceObject)
/// <summary> /// 동일 여부 구하기 /// </summary> /// <param name="sourceObject">소스 객체</param> /// <returns>동일 여부</returns> public override bool Equals(object sourceObject) { if(sourceObject == null) { return false; }
if(!(sourceObject is Complex)) { return false; }
return this.Equals(sourceObject as Complex); }
#endregion
#region 해시 코드 구하기 - GetHashCode()
/// <summary> /// 해시 코드 구하기 /// </summary> /// <returns>해시 코드</returns> public override int GetHashCode() { return (Real.GetHashCode() + Imaginary).GetHashCode(); }
#endregion } }
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▶ MainForm.cs
using System; using System.Windows.Forms;
namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public
#region 생성자 - MainForm()
/// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent();
#region 이벤트를 설정한다.
this.calculateButton.Click += calculateButton_Click;
#endregion }
#endregion
//////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event
#region 계산하기 버튼 클릭시 처리하기 - calculateButton_Click(sender, e)
/// <summary> /// 계산하기 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void calculateButton_Click(object sender, EventArgs e) { Complex complexA = Complex.Parse(this.complexATextBox.Text); Complex complexB = Complex.Parse(this.complexBTextBox.Text); double real = double.Parse(this.realTextBox.Text);
this.complexAPlusRealTextBox.Text = (complexA + real).ToString(); this.realPlusComplexATextBox.Text = (real + complexA).ToString(); this.complexAMultiplyRealTextBox.Text = (complexA * real).ToString(); this.realMultiplyComplexATextBox.Text = (real * complexA).ToString(); this.complexAMinusRealTextBox.Text = (complexA - real).ToString(); this.realMinusComplexATextBox.Text = (real - complexA).ToString();
this.complexADivideRealTextBox.Text = (complexA / real).ToString("0.0000");
Complex complexC = (complexA / real) * real;
this.complexADivideRealMultiplyRealTextBox.Text = complexC.ToString();
this.realDivideComplexATextBox.Text = (real / complexA).ToString("0.0000");
Complex complexD = (real / complexA) * complexA;
this.realDivideComplexAMultiplyComplexATextBox.Text = complexD.ToString();
Complex complexE = (Complex)real;
this.castRealTextBox.Text = complexE.ToString(); }
#endregion } }
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