Palindrome using recursion

recursive_palindrome.cpp

#include <iostream>
#include <string>
using namespace std;

bool isPalindrome(const string &str, int low, int high)
{
	if (low >= high)return true;
	if (str[low] != str[high])return false;
	return isPalindrome(str, ++low, --high);
}
bool isPalindrome(const string &str)
{
	return isPalindrome(str, 0, str.size()-1);
}
int main()
{
	cout << boolalpha << isPalindrome("boc") << '\n';
	return 0;
}