fork download 
  1. #include <stdio.h>
  2.  
  3. int is_palindrome(const char* str) {
  4.     const char* last = str + strlen(str) - 1;
  5.     while (str < last) {
  6.         if (*str++ != *last--) return 0;
  7.     }
  8.  
  9.     return 1;
  10. }
  11.  
  12. int main(void) {
  13. 	printf("%d\n", is_palindrome(""));
  14.     printf("%d\n", is_palindrome("foo"));
  15.     printf("%d\n", is_palindrome("ooffoo"));
  16.     printf("%d\n", is_palindrome("..-.."));
  17.     printf("%d\n", is_palindrome("lala"));
  18. 	return 0;
  19. }
Success #stdin #stdout 0.01s 1720KB
comments (?)
stdin 
Standard input is empty
stdout 
1
0
1
1
0
https://ideone.com/6A6KrF
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!