Using the string functions below, write new functions to do the
following, and test them in your main() function:
Determine whether the first or last characters in the string
are any of the characters a, b, c, d, or e.
Reverse a string
Determine whether a string is a palindrome (spelled the same
way forward or backward
FUNCTIONS REFERENCE:
string myString = "hello"; // say we have a string…
// … we can call any of the following
// string...