C#.NET structures are always value types. True False

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Question
C#.NET structures are always value types.
Options
A. True
B. False

Correct Answer

True

Structures problems

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1. Which of the following statements is correct?
Options
A. A struct never declares a default constructor.
B. All value types in C# inherently derive from ValueType, which inherits from Object.
C. A struct never declares a default destructor.
D. In C#, classes and structs are semantically same.

Discuss

2. Which of the following will be the correct output for the program given below?

namespace CuriousTabConsoleApplication
{ 
    struct Sample
    {
        public int i;
    }
    class MyProgram
    { 
        static void Main(string[] args)
        {
            Sample x = new Sample();
            Sample y;
            x.i = 9;
            y = x;
            y.i = 5;
            Console.WriteLine(x.i + " " + y.i); 
        } 
    } 
}

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3. Which of the following will be the correct output for the C#.NET program given below?

namespace CuriousTabConsoleApplication
{ 
    struct Sample
    {
        public int i;
    }
    class MyProgram
    { 
        static void Main()
        {
            Sample x = new Sample(); 
            x.i = 10; 
            fun(x); 
            Console.Write(x.i + " ");
        }
        static void fun(Sample y)
        {
            y.i = 20; 
            Console.Write(y.i + " ");
        } 
    } 
}

Discuss

4. When would a structure variable get destroyed?
Options
A. When no reference refers to it, it will get garbage collected.
B. Depends upon whether it is created using new or without using new.
C. When it goes out of scope.
D. Depends upon the Project Settings made in Visual Studio.NET.
E. Depends upon whether we free it's memory using free() or delete().

Discuss

5. How many bytes will the structure variable samp occupy in memory if it is defined as shown below?

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

Discuss

6. Which of the following is the correct way to define a variable of the type struct Emp declared below?
```
struct Emp
{
    private String name; 
    private int age; 
    private Single sal;
}
```
1. Emp e(); e = new Emp();
2. Emp e = new Emp;
3. Emp e; e = new Emp;
4. Emp e = new Emp();
5. Emp e;
Options
A. 1, 3
B. 2, 5
C. 4, 5
D. 1, 2, 4

Discuss

7. Which of the following will be the correct output for the C#.NET program given below?

namespace CuriousTabConsoleApplication
{ 
    struct Sample
    { 
        public int i;
    }
    class MyProgram
    { 
        static void Main(string[] args)
        {
            Sample x = new Sample(); 
            x.i = 10; 
            fun(ref x); 
            Console.Write(x.i + " ");
        }
        public static void fun(ref Sample y)
        { 
            y.i = 20;
            Console.Write(y.i + " "); 
        } 
    } 
}

Discuss

9. 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

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

struct Book
{
    private String name; 
    private int noofpages; 
    private Single price;
}
Book b = new Book();

Options
A. The structure variable b will be created on the heap.
B. We can add a zero-argument constructor to the above structure.
C. When the program terminates, variable b will get garbage collected.
D. The structure variable b will be created on the stack.
E. We can inherit a new structure from struct Book.

Discuss

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C#.NET structures are always value types.

Structures problems

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C#.NET structures are always value types.

Structures problems

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