gs gs108 Object Oriented Concepts - Structures - Quiz No.1
gs gs108 CSharp Quiz
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Question 1: What will be the correct statement in the following C# code?
struct book { private String name; private int pages; private Single price; } book b = new book();
New structure can be inherited from struct book
When the program terminates, variable b will get garbage collected
The structure variable ‘b’ will be created on the stack
When the program terminates, variable b will get garbage collected
Question 2: What will be the correct statement in the following C# code?
class trial { int i; float d; } struct sample { private int x; private Single y; private trial z; } sample s = new sample();
trial object referred by z is created on the stack
z is created on the heap
Both s and z will be created on the heap
s will be created on the stack
Question 3: Choose the correct statement among the following which supports the fact that C# does not allow the creation of empty structures?
C#.NET supports creation of abstract user-defined data types using structures
By having empty structures, it would mean that the new data types have no data associated with, which does not make any sense in C#.NET
Basic reason to create structures is the inability to represent real life objects using standard data types offered by the language
All of the mentioned
Question 4: Choose the correct statement about structures as to why they are defined as value types but not reference types?
Since space required for structure variables is allocated on stack which is a form of memory that is automatically available when a variable to be used is in scope
Structures generally are used to represent user defined data types that consists of small amount of data in them. Hence using stack for declaration of such variables is not a problem
All of the mentioned
None of the mentioned
Question 5: Choose the wrong statement about structures in C#.NET?
Structures can be declared within a procedure
Structures can implement an interface but they cannot inherit from another structure
Structure members cannot be declared as protected
A structure cannot be empty
Question 6: The correct way to define a variable of type struct abc in the following C# code?
struct abc { public string name; protected internal int age; private Single sal; }
abc e = new abc();
abc();
abc e; e = new abc;
abc e = new abc;
Question 7: Which of the following is the correct way to settle down values into the structure variable ‘e’ defined in the following C# code snippet?
struct emp { public String name; public int age; public Single sal; } emp e = new emp(); e.name = "Ankit"; e.age = 24; e.sal = 200; With emp e { .name = "Ankit"; .age = 24; .sal = 200; } name = "Ankit"; age = 24; sal = 200;
All of the mentioned
Question 8: When does a structure variable get destroyed?
When no reference refers to it, it will get garbage collected
Depends on whether it is created using new or without new operator
As variable goes out of the scope
Depends on either we free its memory using free() or delete()
