using System; namespace MyApplication { public class Class1 { public int Add(int x, int y) { return x + y; } public int Subtract(int x, int y) { return x - y; } public int Multiply(int x, int y) { return x * y; } public int Divide(int x, int y) { return x / y; } } class Program { static void Main(string[] args) { // create an instance of Class1 Class1 obj = new Class1(); // perform arithmetic operations Console.WriteLine("Addition: " + obj.Add(10, 20)); Console.WriteLine("Subtraction: " + obj.Subtract(20, 10)); Console.WriteLine("Multiplication: " + obj.Multiply(10, 20)); Console.WriteLine("Division: " + obj.Divide(20, 10)); Console.ReadKey(); } } }
using System; namespace MyApplication { public class Class1 { // private fields private string name; private int age; // constructor public Class1(string name, int age) { this.name = name; this.age = age; } // public properties public string Name { get { return name; } set { name = value; } } public int Age { get { return age; } set { age = value; } } // public method public void PrintInfo() { Console.WriteLine("Name: " + name); Console.WriteLine("Age: " + age); } } }In this example, Class1 is used for creating a custom data type, which stores the name and age of a person. The package library used in this example may vary, depending on the development environment, but it could be .NET Framework, .NET Core, .NET Standard, or Xamarin.