New year C++ script...

newyear.cpp

#include <iostream>

int hextoint(char hex) {
	return ('0' <= hex && hex <= '9')? (int)(hex - '0') : 
		('A' <= hex && hex <= 'F')? 10 + (int)(hex - 'A') : 
		('a' <= hex && hex <= 'f')? 10 + (int)(hex - 'a') : 
		-1;
}

int main(void) {
	char out[] = "4861707079204e6577205965617221";
	std::cout << out << std::endl;
	for (int i = 0; out[i] != '\0'; i++) {
		std::cout << " 0x" << out[i] << out[++i];
	}
	std::cout << std::endl;
	for (int i = 0; out[i] != '\0'; i++) {
		std::cout << (char)(16 * hextoint(out[i]) + hextoint(out[++i]));
	}
	std::cout << std::endl;
	return 0;
}