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AlexanderORubanAlexanderORuban
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Added FractionMath in C# (#4040)
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‎archive/c/c-sharp/FractionMath.cs‎

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using System;
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namespace SamplePrograms
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{
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public class FractionMath
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{
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private int numerator;
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private int denominator;
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public FractionMath(int numerator = 0, int denominator = 1)
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{
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if (denominator == 0)
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{
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throw new ArgumentException("Denominator cannot be zero.");
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}
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this.numerator = numerator;
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this.denominator = denominator;
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}
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// GCD method using the Euclidean algorithm in an iterative approach
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// Orginal algorithm was found on GeeksforGeeks, modified for clarity:
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// https://www.geeksforgeeks.org/program-to-find-gcd-or-hcf-of-two-numbers/#
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private int GCD(int x, int y)
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{
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while (y != 0)
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{
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int z = x;
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x = y;
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y = z % y;
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}
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return x;
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}
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private void Simplify()
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{
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int gcd = GCD(numerator, denominator);
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numerator /= gcd;
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denominator /= gcd;
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if (denominator < 0)
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{
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numerator = -numerator;
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denominator = -denominator;
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}
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}
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public override string ToString()
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{
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Simplify();
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return $"{numerator}/{denominator}";
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}
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public static FractionMath Parse(string fractionString)
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{
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string[] numbers = fractionString.Split('/');
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if (numbers.Length != 2)
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{
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throw new FormatException("Invalid fraction. A format of 'numerator/denominator' is expected.");
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}
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int numerator = int.Parse(numbers[0]);
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int denominator = int.Parse(numbers[1]);
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return new FractionMath(numerator, denominator);
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}
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public static FractionMath operator +(FractionMath f1, FractionMath f2)
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{
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int newNumerator = f1.numerator * f2.denominator + f2.numerator * f1.denominator;
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int newDenominator = f1.denominator * f2.denominator;
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return new FractionMath(newNumerator, newDenominator);
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}
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public static FractionMath operator -(FractionMath f1, FractionMath f2)
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{
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int newNumerator = f1.numerator * f2.denominator - f2.numerator * f1.denominator;
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int newDenominator = f1.denominator * f2.denominator;
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return new FractionMath(newNumerator, newDenominator);
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}
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public static FractionMath operator *(FractionMath f1, FractionMath f2)
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{
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int newNumerator = f1.numerator * f2.numerator;
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int newDenominator = f1.denominator * f2.denominator;
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return new FractionMath(newNumerator, newDenominator);
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}
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public static FractionMath operator /(FractionMath f1, FractionMath f2)
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{
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int newNumerator = f1.numerator * f2.denominator;
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int newDenominator = f1.denominator * f2.numerator;
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return new FractionMath(newNumerator, newDenominator);
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}
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public static bool operator ==(FractionMath f1, FractionMath f2)
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{
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return f1.numerator * f2.denominator == f1.denominator * f2.numerator;
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}
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public static bool operator !=(FractionMath f1, FractionMath f2)
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{
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return !(f1 == f2);
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}
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public static bool operator >(FractionMath f1, FractionMath f2)
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{
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return f1.numerator * f2.denominator > f1.denominator * f2.numerator;
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}
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public static bool operator <(FractionMath f1, FractionMath f2)
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{
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return f1.numerator * f2.denominator < f1.denominator * f2.numerator;
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}
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public static bool operator >=(FractionMath f1, FractionMath f2)
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{
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return f1 > f2 || f1 == f2;
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}
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public static bool operator <=(FractionMath f1, FractionMath f2)
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{
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return f1 < f2 || f1 == f2;
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}
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public static void Main(string[] args)
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{
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if (args.Length != 3)
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{
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Console.WriteLine("Usage: ./fraction-math operand1 operator operand2");
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return;
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}
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try
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{
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FractionMath operand1 = Parse(args[0]);
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string operation = args[1];
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FractionMath operand2 = Parse(args[2]);
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FractionMath result;
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bool comparisonResult;
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switch (operation)
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{
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case "+":
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result = operand1 + operand2;
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Console.WriteLine(result);
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break;
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case "-":
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result = operand1 - operand2;
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Console.WriteLine(result);
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break;
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case "*":
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result = operand1 * operand2;
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Console.WriteLine(result);
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break;
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case "/":
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result = operand1 / operand2;
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Console.WriteLine(result);
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break;
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case "==":
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comparisonResult = operand1 == operand2;
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Console.WriteLine(comparisonResult ? "1" : "0");
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break;
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case "!=":
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comparisonResult = operand1 != operand2;
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Console.WriteLine(comparisonResult ? "1" : "0");
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break;
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case ">":
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comparisonResult = operand1 > operand2;
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Console.WriteLine(comparisonResult ? "1" : "0");
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break;
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case "<":
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comparisonResult = operand1 < operand2;
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Console.WriteLine(comparisonResult ? "1" : "0");
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break;
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case ">=":
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comparisonResult = operand1 >= operand2;
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Console.WriteLine(comparisonResult ? "1" : "0");
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break;
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case "<=":
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comparisonResult = operand1 <= operand2;
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Console.WriteLine(comparisonResult ? "1" : "0");
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break;
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default:
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Console.WriteLine($"Error: Invalid operator '{operation}'");
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break;
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}
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}
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catch (Exception e)
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{
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Console.WriteLine($"Error: {e.Message}");
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}
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}
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}
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}

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