checking for palindrom using for or while loop

palindrom_for

#include <iostream>
#include <cstring>

int main (int argc, char ** argv) {

	char name[] = {"rentne"};

	char * a = &name[0];				// set to first letter in name
	char * b = &name[sizeof(name)-2];	// set to last letter in name

	std::cout << "Name entered: " << name << std::endl;

	for (int i=0; i<(sizeof(name)/2); i++) {

		std::cout << "a: " << *a << "\nb: " << *b << std::endl;

		if (*a != *b) {

			std::cout << "Not a palindrom" << std::endl;
			exit(0);
		}

		a++;
		b--;
	}

	std::cout << "It's a palindrom" << std::endl;

	return 0;
}

palindrom_while

#include <iostream>
#include <cstring>

bool diff_char (char * a, char * b);

int main (int argc, char ** argv) {

	char name[] = {"rentner"};

	char * a = &name[0];				// set to first letter in name
	char * b = &name[sizeof(name)-2];	// set to last letter in name

	bool check = true;
	int counter = 0;

	std::cout << "Name entered: " << name << std::endl;

	while (check == true && counter < sizeof(name)/2) {

		check = diff_char(a, b);

		a++; b--; counter++;
	}

	std::cout << "It's a palindrom" << std::endl;

	return 0;
}

bool diff_char (char * a, char * b) {

	std::cout << "a: " << *a << "\nb: " << *b << std::endl;

	if (*a != *b) {

		std::cout << "Not a palindrom" << std::endl;

		return false;
	}

	return true;
}