PalindromeExercise.cpp

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#include "macros.h" // needs to be declared as first entry in .cpp or .h file!
#include <string>
#include <iostream>
using namespace std;
#include "AbstractExercise.h"

class PalindromeExercise : public AbstractExercise {
public:

    PalindromeExercise(string name) : AbstractExercise(name){}

protected:

    void execute();

    void getInput();

private:
    string fWord;
    static bool isPalindrome(const string& strToTest);

};
    
namespace {
    PalindromeExercise proto("PalindromeExercise");
}

void PalindromeExercise::getInput(){
    cout << "Enter string to test: "<< endl;
    cin >> fWord;
}

void PalindromeExercise::execute(){
    cout << "<" << fWord << ">" << " is " << (isPalindrome(fWord) ? "a " : "no ") << "palindrome." << endl;
}

bool PalindromeExercise::isPalindrome(const string& strToTest){
    const int STR_LENGTH = strToTest.length();
    bool stillIsPalindrome = true;

    for(int i=0;i<(STR_LENGTH / 2);i++){
        stillIsPalindrome = strToTest[i] == strToTest[STR_LENGTH-1-i];
        if(!stillIsPalindrome){
            break;
        }
    }
    return stillIsPalindrome;
}

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