$($a$)$ Given an integer array arr of size $10,$ write a snippet that prints the array using pointer arithmetic.

$($b$)$ Explain what happens when you increment or decrement a pointer. Give an example with an integer pointer.

$($c$)$ Consider an array int arr$[5]=\{10,20,30,40,50\}$; Write a function that reverses the array using pointers.

$($d$)$ Given a character array $($aka a string$)$ char s$[]=$ "pointer";, use pointer arithmetic to convert the string to uppercase.