Assume entries in a linked list are of type struct listrec:

struct listrec

{

int value;

struct listrec *next;

};

Write a main() routine in which you create the following linked list:

| 4 | --|-----> | 5 | --|------> | 3 | --|-------> NULL

Write a function called listsize that takes a pointer to the start of a linked list and returns the number of elements in the list, and another function called listsum that also takes a pointer to the start of a linked list and returns the sum of the values of all elements in the list. In your main routine, you need to print out the results of these two functions on computer screen.