Introduction - If you have any usage issues, please Google them yourself
Write a function palin () is used to check whether a string forward and reverse spelling of the same spelling of " palindrome" (palindromia). Such as " MADAM" is a palindrome. If you relax the requirement that ignores the difference between uppercase and lowercase letters, ignoring spaces and punctuation, etc., is like " Madam, I' m Adam." Like the phrase can also be seen as a palindrome. Programming requirements: ⑴ input string in the main function. ⑵ the first pointer to the string passed to the function palin () as a function parameter. When the string is a palindrome, requiring function palin () returns 1, otherwise it returns 0. ⑶ If palindrome, in the main function output " Yes." If it is a palindrome, output " No." In the main function. Tip: In function palin (), define two pointer variable, pointing to the first string and tail, they point to the character after the judgment equal to the head pointer head moves backward one chara