INTERVIEW QUESTIONS MICROSOFT C# DETAILS

Question: How we can use inheritance and polymorphisms in c# programming?

Answer: Inheritance in C# is similar to cpp, if you are familiar to cpp, the only difference is you dont inherit a class in public or protected mode, the way to inherit a class is Class Base { protected int length, breadth; public Base(int a, int b) { this.length = a; this.breadth = b; } public virtual int Show() { Console.WriteLine(Length of a rectangle is {0} and breadth is {1}, length, breadth); } } Class Derived: Base // The way to inherit a class in C# { public Derived(int l, int b, string color): base(l, b) // call Base constructor { this.color = color; } // an overridden method beacuse in the derived method we can // change the behaviour, This is a kind on polymorphism. public override int Show() { base.Show(); Console.WriteLine("Color of the rectangle is " color); } public string color; } Class Tester { public static void Main() { Base b = new Base(10, 20); Derived d = new Derived(30, 40, "Red" ); b.Show(); d.show(); } }Output: Length of a rectangle is 10 and breadth is 20 Length of a rectangle is 30 and breadth is 40 Color of the rectangle is RedI hope this will make you a bit clear about Inheritance and polymorphism.

Inheritance in C# is similar to cpp, if you are familiar to cpp, the only difference is you dont inherit a class in public or protected mode, the way to inherit a class is Class Base { protected int length, breadth; public Base(int a, int b) { this.length = a; this.breadth = b; } public virtual int Show() { Console.WriteLine(Length of a rectangle is {0} and breadth is {1}, length, breadth); } } Class Derived: Base // The way to inherit a class in C# { public Derived(int l, int b, string color): base(l, b) // call Base constructor { this.color = color; } // an overridden method beacuse in the derived method we can // change the behaviour, This is a kind on polymorphism. public override int Show() { base.Show(); Console.WriteLine("Color of the rectangle is " color); } public string color; } Class Tester { public static void Main() { Base b = new Base(10, 20); Derived d = new Derived(30, 40, "Red" ); b.Show(); d.show(); } }Output: Length of a rectangle is 10 and breadth is 20 Length of a rectangle is 30 and breadth is 40 Color of the rectangle is RedI hope this will make you a bit clear about Inheritance and polymorphism. Source: CoolInterview.com

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