Made only to help :)

SwitchCharPointer.cpp

#include <iostream>

// THIS HASH FUNCTION IS A ADAPTATION FROM https://stackoverflow.com/questions/8317508/hash-function-for-a-string
// constexpr is C++11
constexpr unsigned hash_str(const char* s) {
	unsigned h = 37;
	while (*s) {
		h = (h * 54059) ^ (s[0] * 76963);
		s++;
	}
	return h;
}
// End HASH FUNCTION

void aFunction(const char* s) {
	// We switch the hash of 's'
	switch (hash_str(s)) {
		// The possible values could also be in a ENUM
		case hash_str("Case1"):
			std::cout << "It's Case1" << std::endl;
			break;

		case hash_str("Case2"):
			std::cout << "It's Case2" << std::endl;
			break;

		case hash_str("Case3"):
			std::cout << "It's Case3" << std::endl;
			break;

		default:
			std::cout << "Not Found" << std::endl;
			break;
	}
}

int main() {
	aFunction("Case1");
	aFunction("Case3");
	aFunction("Other Case");
	aFunction("Case2");
    return 0;
}