Q$2.$ pts$.)$ Write a $\frac{C}{C}++$ function to calculate and return the number of the elements in a given linked list. Assume that the complete linked list implementation already existing in the program.

int sizeLI $($struct node$*$ mylist$)$

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Q$3.(35$ pts$.)$ Write a $\frac{C}{C}++$ function to calculate and return the average of the even elements in a given linked list. Assume that the complete linked list implementation already existing in the program.

int avg$\_$even$\_$IL $($struct node$*$ mylist$)$

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