Array in C#

Faq.txt

Q1) Difference between List and array?
ans Array are static with a fixed size whereas List are dynamic and size can be change according to our need.

Q2) What does split function do?
ans: It convert a string into a array by spliting the string by a character and each word is stores as an element in an array.

Q3) How can we add at the front of a list?
ans: We can use the Insert function to add at index 0.
     eg. list.Insert(0,element you want to add).
     
Q4) Can we iterate the value of the list using foreach loop?
ans: Yes we can iterate the value of list just as we iterate an array.

Mcq.txt

Q1) What will this statement give :
    
    int[] arr=new int[3];
    arr[4]=10;
    Console.WriteLine(arr[0]);

a) 0
b) undefined
c) error
d) -1

ans: c) error

Q2) Select the correct output?

      int[] arr=new int[6]{1,2,3,4,5,6};
      Console.WriteLine(String.Join(",",arr).GetType());

a) Array
b) List
c) String
d) 1,2,3,4,5,6

ans:c) String

Q3) What are the number of elements in its dimenision?

      int[,,] arr={{{1,2,0},{3,4,0}},{{0,5,6},{7,0,8}}};

a) 1,2,3
b) 2,3
c) 3,3
d) 2,2,3

ans: d) 2,2,3


Q4) what will be the output?

    int[,,] arr={{{1,2,0},{3,4,0}},{{0,5,6},{7,0,8}}};
    Console.WriteLine(arr.Length);

a) error
b) 2
c) 3
d) 12

ans: d)12