Create a project with two files: holdmystring.S and mymain.c$.$ The file

holdmystring.S should contain a string called mystring. In mymain.c$,$ a positive

integer representing a position in the string will be sent to holdmystring.S$.$ The

holdmystring.S should return the character corresponding to the string's specified

position.

For example, if mystring is $1$AcD$456$YU$....$ and $2$ is sent from mymain.c$,$

holdmystring.S should return A$.$

mystring should only contain alphanumeric characters. It is assumed that the length

of mystring is unknown, and you must first find the length of it$.$ If the number sent

by mymain.c is greater than the length of mystring, holdmystring.S should return

a question mark.