The answer should be in C programming language.

The snake game implementation is using a Linked-List structure. The spawn function spawns the head of the snake at 8,8 and all the remaining nodes to the right of the head of the snake. There are 3 nodes at the beginning including the head of the snake. The grow functions appends one node at the end on top of the tail. The dump function prints the positions of the nodes of the entire snake with format " (\%2d,\%2d) ". The directions are defined in the template and the move function uses an integer to determine the direction of movement. The top-left corner is chosen as 0,0 , the direction RIGHT corresponds to positive x and the direction DOWN corresponds to positive y. The move function moves the snake by 1 unit in the given direction