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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. #include <iterator>
  5. using namespace std;
  6.  
  7. bool checkPalindrome(const string& str) {
  8.     for (auto p = str.begin(), q = str.end();  p!=q && p!=q+1; p++  ) 
  9.         if (*p!=*--q)       // if char from front doesn't match char from rear ?
  10.             return false;   // then it's not a palindrome !
  11.     return true;
  12. }
  13.  
  14. int main(){
  15.     vector<string> str { "level", "deed", "leaf", "dead","","e","de" }; 
  16.     vector<bool> expected { true, true, false, false, true, true, false };
  17.  
  18.     for (size_t i = 0; i< str.size(); i++) {
  19.     	bool test = checkPalindrome(str[i]); 
  20.     	cout << str[i] << " would " << (test?"":"not ") << "be a palindrome: " 
  21.     	     << (test==expected[i]?"correct!":"FAILURE!!!")<<endl;
  22.     }
  23.  
  24.     char *s="blaalb"; 
  25.     cout << checkPalindrome(s);     // no problem ! gets converted 
  26.     return 0;
  27. }
  28.  
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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level would be a palindrome: correct!
deed would be a palindrome: correct!
leaf would not be a palindrome: correct!
dead would not be a palindrome: correct!
 would be a palindrome: correct!
e would be a palindrome: correct!
de would not be a palindrome: correct!
1
https://ideone.com/30Aufy
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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