Introduction - If you have any usage issues, please Google them yourself
Write a letter of fun, function is to: determine whether a string is palindrome? Or, the function returns 1, the main function output: YES, otherwise it returns 0, the main function output NO. Palindrome poem refers to the cis-read and read back the same string. For example, the string is a palindrome LEVEL, and the string 123312 is not a palindrome. Note: Some source code in the file PROG1.C. Do not change main function and other functions in any content, only the braces in the function fun fill a number of statements you write.