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There are two versions, one which is case sensitive, and another which isn't case sensitive.
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Submitted By: gabehabe
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Rating:
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Views: 964 |
Language: C++
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Last Modified: July 3, 2008 |
Snippet
/** * CHECK A STRING TO FIND OUT IF IT IS A PALINDROME * BY DANNY BATTISON * gabehabe@hotmail.com */ #include <cctype> // tolower() #include <string> /* Check if a word is a palindrome (case sensitive!) */ bool isPalindrome (std::string word) { for (unsigned int i = 0; i < (word.length()/2); i++) if (word[i] != word[(word.length()-1)-i]) return false; /* If this point has been reached, then the word is a palindrome */ return true; } /* CASE INSENSITIVE */ bool isPalindromeCI (std::string word) { /* Convert our string, character by character */ for (unsigned int i = 0; i < word.length(); i++) word[i] = tolower(word[i]); /* Now our word is all lower case, we can pass it to our other function */ return isPalindrome (word); } /** EXAMPLE USAGE **/ #include <iostream> int main () { bool palin = isPalindromeCI ("Hannah"); /* palin is true, since we use our case insensitive version */ bool palin2 = isPalindrome ("Hannah"); /* palin2 is false, since isPalindrome is case sensitive */ std::cin.get (); /* Pause */ return EXIT_SUCCESS; /* Program was executed successfully */ }
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