Write a C statement for each of the following sequence tasks:

(a) Declare a variable mark to be an integer data type. [1 mark]

(b) Assign a default value 20 in a variable mark. [1 mark]

(c) Read any integer value from the user and then the value will be automatically assigned into a variable mark. [2 marks]

(d) Add value 2 to the variable mark and assign them to the same variable mark as well. [1 mark]

(e) Display the value of the mark on the screen. [2 marks]