Which of the following is the correct way to implement the interface given below

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Options

class Employee : IPerson
{
    private String str; 
    public String FirstName
    {
        get
        { 
            return str;
        } 
        set
        { 
            str = value;
        } 
    } 
}

class Employee
{
    private String str;
    public String IPerson.FirstName
    { 
        get
        { 
            return str;
        } 
        set
        { 
            str = value;
        } 
    } 
}

class Employee : implements IPerson
{
    private String str; 
    public String FirstName
    { 
        get
        { 
            return str;
        } 
        set
        {
            str = value; 
        } 
    } 
}

D. None of the above

Correct Answer

class Employee : IPerson
{
    private String str; 
    public String FirstName
    {
        get
        { 
            return str;
        } 
        set
        { 
            str = value;
        } 
    } 
}

More questions

1. An Account class has a property called accountNo and acc is a reference to a bank object and we want the C#.NET code snippet given below to work. Which of the following options will ensure this functionality?
```
acc.accountNo = 10; 
Console.WriteLine(acc.accountNo);
```
Options
A. Declare accountNo property with both get and set accessors.
B. Declare accountNo property with only get accessor.
C. Declare accountNo property with get, set and normal accessors.
D. Declare accountNo property with only set accessor.
E. None of the above

Discuss

2. Which of the following statements is correct about an interface?
Options
A. One interface can be implemented in another interface.
B. An interface can be implemented by multiple classes in the same program.
C. A class that implements an interface can explicitly implement members of that interface.
D. The functions declared in an interface have a body.

Discuss

3. Which of the following statements is correct about the C#.NET code snippet given below?

class Trial
{ 
    int i;
    Decimal d;
}
struct Sample
{
    private int x;
    private Single y;
    private Trial z;
}
Sample ss = new Sample();

Options
A. ss will be created on the heap.
B. Trial object referred by z will be created on the stack.
C. z will be created on the heap.
D. Both ss and z will be created on the heap.
E. ss will be created on the stack.

Discuss

Options
A. 1, 2
B. 2, 3
C. 1, 3, 5
D. 2, 4

Discuss

5. What will be the output of the C#.NET code snippet given below?

int num = 1, z = 5;

if (!(num <= 0))
    Console.WriteLine( ++num + z++ + " " + ++z ); 
else
    Console.WriteLine( --num + z-- + " " + --z );

Options
A. 5 6
B. 6 5
C. 6 6
D. 7 7

Discuss

6. Which of the following statements is correct?
Options
A. When used as a modifier, the new keyword explicitly hides a member inherited from a base class.
B. Operator overloading works in different ways for structures and classes.
C. It is not necessary that all operator overloads are static methods of the class.
D. The cast operator can be overloaded.

Discuss

7. Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?
Options
A. float pi = 3.14F;
B. #define pi 3.14F;
C. const float pi = 3.14F;
D. const float pi; pi = 3.14F;
E. pi = 3.14F;

Discuss

8. Which of the following statements is correct about the C#.NET program given below if a value "ABCD" is input to it?

using System;
namespace CuriousTabConsoleApplication
{
    class MyProgram
    {
        static void Main(string[] args)
        {
            int index; 
            int vat = 88;
            int[] a = new int(5];
            try
            {
                Console.Write("Enter a number: ");
                index = Convert.Toint32(Console.ReadLine());
                a[index] = val;
            }
            catch(Exception e)
            {
                Console.Write("Exception occurred");
            }
            Console.Write("Remaining program");
        }
    }
}

Options
A. It will output: Exception occurred
B. It will output: Remaining program
C. It will output: Remaining program Exception occurred
D. It will output: Exception occurred Remaining program
E. The value 88 will get assigned to a[0].

Discuss

9. Which statement will you add in the function fun() of class B, if it is to produce the output "Welcome to CuriousTab.com!"?

namespace CuriousTabConsoleApplication
{ 
    class A
    {
        public void fun()
        {
            Console.Write("Welcome");
        } 
    } 
    class B: A
    {
        public void fun()
        {
            // [*** Add statement here ***]
            Console.WriteLine(" to CuriousTab.com!");
        } 
    } 
    class MyProgram
    { 
        static void Main (string[ ] args)
        { 
            B b = new B(); 
            b.fun();
        } 
    } 
}

Discuss

10. Which of the following statements are correct about data types?
1. If the integer literal exceeds the range of byte, a compilation error will occur.
2. We cannot implicitly convert non-literal numeric types of larger storage size to byte.
3. Byte cannot be implicitly converted to float.
4. A char can be implicitly converted to only int data type.
5. We can cast the integral character codes.
Options
A. 1, 3, 5
B. 2, 4
C. 3, 5
D. 1, 2, 5

Discuss

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CuriousTab

CuriousTab

Discussion

Which of the following is the correct way to implement the interface given below?
interface IPerson { String FirstName { get; set; } }

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CuriousTab

CuriousTab

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Which of the following is the correct way to implement the interface given below? interface IPerson { String FirstName { get; set; } }

More questions

More in C# Programming:

Aptitude

Engineering

Programming

Reasoning

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Which of the following is the correct way to implement the interface given below?
interface IPerson { String FirstName { get; set; } }