using System; namespace Program { class Program { static void Main(string[] args) { int Num1, Num2, result; char option; Console.Write("Enter the first number: "); Num1 = Convert.ToInt32(Console.ReadLine()); Console.Write("\nEnter the second number: "); Num2 = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("\n------------------"); Console.WriteLine("1. Addition"); Console.WriteLine("2. Subtraction"); Console.WriteLine("3. Multiplication"); Console.WriteLine("4. Division"); Console.WriteLine("------------------\n"); Console.Write("Enter operation: "); option = Convert.ToChar(Console.ReadLine()); switch (option) { case '1': result = Num1 + Num2; Console.WriteLine("\nCalculation: {0} + {1} = {2}", Num1, Num2, result); break; case '2': result = Num1 - Num2; Console.WriteLine("\nCalculation: {0} - {1} = {2}", Num1, Num2, result); break; case '3': result = Num1 * Num2; Console.WriteLine("\nCalculation: {0} * {1} = {2}", Num1, Num2, result); break; case '4': result = Num1 / Num2; Console.WriteLine("\nCalculation: {0} / {1} = {2}", Num1, Num2, result); break; default: Console.WriteLine("\nInvalid Option!"); break; } Console.ReadLine(); } } }
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