Question $45$ In C$,$ it is appropriate to say that a string is a$($n$)\_\_\_\_\_\_\_\_\_\_.$ a$.$ integer b$.$ pointer c$.$ sequence of characters contained in single quotes d$.$ double quote$6\mathrm{.}31($Palindromes$)$ A palindrome is a string that's spelled the same way forward and backward. Some

examples of palindromes are: "radar," "able was i ere i saw elba," and, if you ignore blanks, "a man a

plan a canal panama." Write a recursive function testPalindrome that returns $1$ if the string stored in the

array is a palindrome and $0$ otherwise. The function should ignore spaces and punctuation in the string.