In the ML language, write a function dispnthc to display the n-th character of a String WITHOUT using ML built in libraries and using non-tail recursion to write the functions. you may assume that the input string is always longer than n.

dispnthc("abcdef", 3) -> #"c"

All functions must be implemented twice, one if-then-else and one in pattern style.

if there is anything is missing i'll post it asap, thank you.