a) Explain data structure with syntax. b) List out the classification of data structure, and sketch a diagram of data structure classification c) Explain array data structure with example, and how to accesses element value of an array. d) Explain malloc() and free() methods. e) Write any three disadvantages about array data structure. f) Define algorithm, and what necessary criteria to be satisfied by every algorithm. g) Write any three characteristic of data structure. h) Set up an array to hold the following values, and in this order: 23, 6, 47, 35, 2, 14. Write a program to get the average of all 6 numbers