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Learn Object-Oriented Programming in C#

Solution Review: Implement an Interface

Explore how to implement interfaces in C# by examining the Calculator class example that uses the IAddition interface. Understand how defining and implementing interface methods like AddTwo() supports flexible and modular object-oriented programming design.

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Solution

C#
// Addition interface
interface IAddition {
  int AddTwo(int num1, int num2);
}
// Calculator Class Implementing the Addition Interface
class Calculator : IAddition {
  
  // Overriding the add method of Addition interface
  public int AddTwo(int num1, int num2) {
    return num1 + num2;
  }
  
}
class Demo {
  
 public static void Main(string[] args) {
   Calculator cal = new Calculator();
   Console.WriteLine(cal.AddTwo(10, 20));
 }
  
}

Explanation

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