gs gs108 Object Oriented Concepts - Interfaces Implementation - Quiz No.1

 interface a1 { void f1(); int f2(); } class a :a1 { void f1() { } int a1.f2() { } } 

 interface a1 { void f1(); void f2(); } class a :a1 { private int i; void a1.f1() { } } 

 interface abc { String FirstName { get; set; } String LastName { get; set; } void print(); void stock(); int fun(); } 

 interface calc { void cal(int i); } public  class maths :calc { public int x; public void cal(int i) { x = i * i; } } class Program { public static void Main(string[] args) { display arr = new display(); arr.x = 0; arr.cal(2); Console.WriteLine(arr.x); Console.ReadLine(); } } 

 interface calc { void cal(int i); } class displayA :calc { public int x; public void cal(int i) { x = i * i; } } class displayB :calc { public int x; public void cal(int i) { x = i / i; } } class Program { public static void Main(string[] args) { displayA arr1 = new displayA(); displayB arr2 = new displayB(); arr1.x = 0; arr2.x = 0; arr1.cal(2); arr2.cal(2); Console.WriteLine(arr1.x + " " + arr2.x); Console.ReadLine(); } } 

 interface i1 { void fun(); } interface i2 { void fun(); } public class maths :i1, i2 { void i1.fun() { Console.WriteLine("i1.fun"); } void i2.fun() { Console.WriteLine("i2.fun"); } } class Program { static void Main(string[] args) { Sample obj = new Sample(); i1 i = (i1) obj; i.fun(); i2 ii = (i2) obj; ii.fun(); } } 

  interface abc { string name { get; set; } }

 interface i1 { void f1(); } interface i2 :i1 { void f2(); } public class maths :i2 { public void f2() { Console.WriteLine("fun2"); } public void f1() { Console.WriteLine("fun1"); } } class Program { static Void Main() { maths m = new maths(); m.f1(); m.f2(); } }