Arrays Questions in C#

1. ) What is an array?                                                                                                        

An array is a kind of variable which can hold multiple variable for same data type.

2. ) What are the steps involve for creation of an array?                                         

• Declaration of Arrays
• Creation of Arrays
• Initialization of Arrays

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3. ) What is the syntax for declaration of an array?                                                  

 type [ ] arrayname;

4. ) What is the syntax for creation of an array?                                                       

arrayname = new type[size];

5. ) What is the syntax for initialization of an array?                                               

arrayname[subscript]=value;

6. ) How can calculate the length of an array?                                                           

int a = array.Length;

7. ) What is the default value of a numeric array?                                                    
Zero (0)

8. ) Which type of array can not access to the method of System.class?              

Jagged arrays
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9. ) When we create an Array ,its automatically inherit from System.Array class? 
True

10. ) When we create an ArrayList ,its automatically inherit from System.Collections class?
True

11. ) What are the method commonly used in System.Array class?                      

• Length
• CopyTo
• Clear
• GetValue()
• SetValue()
• Sort()
• Reverse()

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12. ) What are the types of Arrays in C#?                                                                     

• Single Dimensional array
• Multi Dimensional array

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13. ) What are the types of Multi Dimensional Arrays in C#?                                 

• Rectangle array
• Jagged array (variable size array)

14. ) What is Rectangle Array in C#?                                                                            

An array in which each row has same column ,is known as Rectangle Array.

15. ) What is Jagged Array in C#?                                                                                 
Jagged array is an array of array.In which each Row has different size of column. It is also called Variable-size of Array.
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