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  1. #include <iostream> // cout
  2. #include <stdio.h>  // printf
  3. #include <string>
  4.  
  5. using namespace std;
  6.  
  7. bool is_palidrome(string inputString) {
  8.   int num_to_parse = inputString.size();
  9.  
  10.   /* immediately return on single letter string as all single letter strings are palindromes -- saves CPU time as programme does not need to enter the loop */
  11.   if(num_to_parse == 1) {
  12.       return true;
  13.   }
  14.  
  15.   for(int i=0; i<num_to_parse; i++) {
  16.       int point_end = num_to_parse - i - 1;
  17.     if(inputString[i] == inputString[point_end]) {
  18.       continue;
  19.     } else if (i == num_to_parse) {
  20.       return true;
  21.     } else {
  22.       return false;
  23.     }
  24. }}
  25.  
  26.  
  27. int main() {
  28.     // Change the value of inputString to test different palindromes
  29.     string inputString = "caabaac";
  30.     printf("%s", is_palidrome(inputString)?"This is a palindrome.":"Not a palindrome."); // ternary: test condition ? return this if true : return this if false
  31.     return 0;
  32. }
Success #stdin #stdout 0s 16064KB
comments (?)
stdin 
Standard input is empty
stdout 
Not a palindrome.
https://ideone.com/GsWgkZ
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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