Basic CSharp Programming Assessment

Consider the following code snippet:

public class  Card    
{
    public static void RequestCard()    
    {
        Console.WriteLine("Request Logged");  
    }
}

public class DebitCard: Card   
 {
    public DebitCard()  
    {
        Console.WriteLine("Debit Card");
  	Card.RequestCard() ; 
    }
    public static void Main()
    {
        DebitCard debitCardObj = new DebitCard(); 
    }
}

What will be the output?

a. Debit Card
Request Logged

b. Debit Card

c. Compilation Error: "Non-Static constructor cannot call static methods"

d. Runtime Error

What will be the output for the below given code snippet?

namespace Infosys.TestYourCode
{
    class Maths
    {
        public int functionSum(int valueX, int valueY)
        {
            return valueX + valueY;
        }
        public int functionSumMore(int valueA, float valueB)
        {
            return (valueA + (int)valueB);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Maths obj = new Maths();
            int iValueOne;
            int iValueTwo = 90;
            int iValueThree = 100;
            int iValueFour = 12;
            float fValueFive = 14.78f;
            iValueOne = obj.functionSum(iValueTwo, iValueThree);
            Console.WriteLine(iValueOne);

            int j = (obj.functionSumMore(iValueFour, fValueFive));

            Console.WriteLine(j);
            Console.ReadLine();
        }
    }
}

What will be the output of the following code snippet?

class ClassRoom
{
     public static int numberOfComputers;
     static ClassRoom()
     {
         numberOfComputers = 100;
         Console.WriteLine("Computers Set Up Complete");
     }
     public ClassRoom()
     {
         Console.WriteLine("Class Room Set Up Complete");
     }
}
class Program
{
     public static void Main(string[] args)
     {
         ClassRoom.numberOfComputers = ClassRoom.numberOfComputers + 1000;
         Console.WriteLine(ClassRoom.numberOfComputers);
         ClassRoom classRoomObj = new ClassRoom();
     }
}

Select the output from the following options:

a. Computers Set Up Complete
1100
Class Room Set Up Complete

b. 1100
Class Room Set Up Complete

c. Computers Set Up Complete
1100
Computers Set Up Complete
Class Room Set Up Complete

d. Computers Set Up Complete
100
Class Room Set Up Complete

What will be the value of the salary after the below given code is executed?

public class Employee
{
     private int salary;
     public int Salary
     {
         private get
         {
             return salary;
         }
         set
         {
             salary = value;
         }
     }
     public Employee(int salary)
     {
         this.Salary = salary;
     }
}
class Program
{
     static void Main(string[] args)
     {
         Employee objCC = new Employee(10000);
         objCC.Salary++;
     }
        
}

Consider the following code and predict the output:

public class Car
{
        public string carModel;
        public string carColor;
        public Car(string carModel, string carColor)
        {
            this.carModel = carModel;
            this.carColor = carColor;
        }

        public void CarDetails()
        {
            Console.WriteLine("Car Model :{0} , Car Color :{1}",carModel,carColor);   
        }
}
    
class Program
{
        static void Main(string[] args)
        {
            Car carObj1 = new Car("Audi", "Black");
            Car carObj2 = carObj1;
            Car carObj3 = carObj2;

            Car[] carObjArray = { carObj1, carObj2, carObj3 };

            for(int i = 0; i < carObjArray.Length; i++)
            {
                if(carObjArray[i] != null)
                {
                    carObjArray[i].CarDetails();
                    carObjArray[i] = null;
                }
            }
        }
}

Select the output from the following options:

a. Car Model :Audi , Car Color :Black

b. Car Model :Audi , Car Color :Black
Car Model :Audi , Car Color :Black

c. Car Model :Audi , Car Color :Black
Car Model :Audi , Car Color :Black
Car Model :Audi , Car Color :Black

d. Runtime Error

Consider the following code snippet:

 public class Bill
 {
     public virtual void ShowBillAmount(double rentPerMonth,int durationInMonths)
     {
         Console.WriteLine("Total Bill Amount is: "+(rentPerMonth*durationInMonths));
     }
 }
 public class Prepaid : Bill
 {
     public new void ShowBillAmount(double rentPerMonth, int durationInMonths)
     {
         int discount = 100;
         Console.WriteLine("Total Bill Amount is: " + ((rentPerMonth* durationInMonths)-discount));
     }
 }
 public class Program
 {
     public static void Main()
     {
         Bill billObj = new Bill();
         Bill prepaidObj = new Prepaid();
         billObj.ShowBillAmount(200,4);
         prepaidObj.ShowBillAmount(180,2);
     }
 }

Select the output from the following options:

a. Total Bill Amount is: 800
Total Bill Amount is: 360

b. Total Bill Amount is: 800
Total Bill Amount is: 260

c. Total Bill Amount is: 700
Total Bill Amount is: 360

d. Total Bill Amount is: 700
Total Bill Amount is: 260

What will be the output of the following code snippet?

public class Employee
{
     int empID;
     string name;
     double basicSal;
     public static int count;

     static Employee()
     {
         count = 1000;
     }    

     public Employee(string name,double basicSal)
     {
         empID = ++count;
         this.name = name;
         this.basicSal = basicSal+basicSal * .10;
     }

     public void Update(ref string lName, out double hra)
     {
         lName = this.name +" "+ lName;
     }
}
   
public class Program
{
     static void Main(string[] args)
     {            
         Employee emp1 = new Employee("James",45000);
         string lName = "Paul";
         double hra = 4950;
         emp1.Update(ref lName, out hra);
         Console.WriteLine("Updated Data\nName={0}\nHRA={1}", lName,hra);
     }
}

Select the output from the following options:

a. Updated Data
Name=James Paul
HRA=4950

b. Updated Data
Name=null
HRA=0

c. Updated Data
Name=James Paul
HRA=0

d. Compilation Error

Predict the output of the following code:

 class Employee
 {
     protected int empId;

     public Employee(int empId)
     {
         this.empId = empId;
     }
 }
 class Manager : Employee
 {
     public void Display()
     {
         Console.WriteLine("Employee Id : {0}", empId);
     }
 }
 class Program
 {
     public static void Main()
     {
         Manager mgrObj = new Manager();
         mgrObj.Display();
     }
 }

Predict the output of the following code snippet:

public class Employee
    {
        int empID;
        string name;
        double basicSal;
        public static int count;

        static Employee()
        {
            count = 1000;
        }   
         
        public Employee()
        {
            empID = ++count;
        }
          
        public Employee(string name,double basicSal)
        {
            this.name = name;
            this.basicSal = basicSal;
        }       
        
        public void Display()
        {
            Console.WriteLine("Employee Number={0}\nName={1}\nBasicSal={2}", empID, name, basicSal);
        }
    }
   
    public class Program
    {
        static void Main(string[] args)
        {
            Employee emp1 = new Employee("Jack",45000.00);
            emp1.Display();
        }
    }

Select the output from the following options:

a. Employee Number=0
Name=Jack
BasicSal=45000

b. Employee Number=1000
Name=Jack
BasicSal=45000

c. Employee Number=1000
Name=null
BasicSal=0

d. Employee Number=1000
Name=null
BasicSal=45000

An online shopping website has the requirement of updating specific product prices during festive seasons.The developer has written the following code.

When the tester ran the code, he found out that product price was not updated.

What was the error?

   public struct Product 
   {
        public int productId;
        public string productName;
        public int price;
    }
   
   public class Program 
   {
        public static void Main()
   	    {
            Product productObj = new Product();
            productObj.productId = 101;
            productObj.productName = "XBOX One";
            productObj.price = 40000;
            Console.WriteLine("Before Price Update : " + productObj.price);
            UpdatePrice(productObj);
            Console.WriteLine("After Price Update : " + productObj.price);
        }
   	    
        public static void UpdatePrice(Product productObj)
        {
            productObj.price = 35000;
        }
   }