interface ifunction

Question

1.craete a class called car with 2 data members namely :No Of doors and no of wheels create 2 methods to accept the values of the said data members and to display the values on the screen. create an object to test the above class; 2.create an interface called ifunction and put signature of 2 methods namelygetfueltype and setfueltype function will return the fueltype of the car such as petroldiesal etc and setfueltype fun will set the fueltype of the car . after creationg the interface modify the above car class to implement the interface =plz help me... with explanation.. y because i wanna explain

Vulpes · Answer

/* problem 1 - code should be self explanatory */ using System; class car { private int numberOfDoors; private int numberOfWheels; public void DisplayNumberOfDoors() { Console.WriteLine(The number of doors is {0} numberOfDoors); } public void DisplayNumberOfWheels() { Console.WriteLine(The number of wheels is {0} numberOfWheels); } public void AcceptNumberOfDoors(int numDoors) { numberOfDoors = numDoors; } public void AcceptNumberOfWheels(int numWheels) { numberOfWheels = numWheels; } } class Test { static void Main() { car c = new car(); c.AcceptNumberOfDoors(4); c.DisplayNumberOfDoors(); c.AcceptNumberOfWheels(4); c.DisplayNumberOfWheels(); Console.ReadKey(); } } /* problem 2 - changes and comments highlighted */ using System; // interface members don't use access modifiers but are implicitly public interface ifunction { string getfueltype(); void setfueltype(string fueltype); } class car : ifunction // now implements ifunction interface { private int numberOfDoors; private int numberOfWheels; private string fueltype; // need a private field to store the fuel type public void DisplayNumberOfDoors() { Console.WriteLine(The number of doors is {0} numberOfDoors); } public void DisplayNumberOfWheels() { Console.WriteLine(The number of wheels is {0} numberOfWheels); } public void AcceptNumberOfDoors(int numDoors) { numberOfDoors = numDoors; } public void AcceptNumberOfWheels(int numWheels) { numberOfWheels = numWheels; } public string getfueltype() // implements interface method - need to specify public now { return fueltype; // return the field value } public void setfueltype(string fueltype) // also implements interface method { // need to prefix the field with 'this' distinguish from parameter of same name this.fueltype = fueltype; } } class Test { static void Main() { car c = new car(); c.AcceptNumberOfDoors(4); c.DisplayNumberOfDoors(); c.AcceptNumberOfWheels(4); c.DisplayNumberOfWheels(); c.setfueltype(petrol); Console.WriteLine(c.getfueltype()); Console.ReadKey(); } }

interface "ifunction"