exception_game

exception_game
==============

How 'not' to use exception handling.
Well since C++ unlike Java actually lets the programmer figure out how he wants to use exceptions..
Why not exploit the exceptions mechanism and be a bit more creative!?

exception_game.cpp

#include <iostream>
#include <unistd.h>
#include <random>

using namespace std;

void cplusplus(int);
void player(int);

static mt19937_64 rng; // random number generator
const int num = 3; // number of possible exceptions
const char* exceptions[]{"NotJavaException","ILoveThisExceptionException","BeaversAteMyScissorsException"};// exception types
const int penalty[]{10,20,50};// damage each exception does
int playerhp = 100; // players are weaker than c++
int cplusplushp = 500;

class PlayerWon{};
class CPlusPlusWon{};

void playerwins(){
	if(cplusplushp<=0){
		throw PlayerWon(); // end program with an exception - throw a class - why not? 
	}
}

void computerwins(){
	if(playerhp<=0){
		throw CPlusPlusWon(); // end program with an exception - throw a class - why not?
	}
}

void player(int which){
	cout<<"C++ sent you a:"<<endl;
	cout<<exceptions[which]<<endl<<endl;
	playerhp-=penalty[which];
	computerwins();
	throw cplusplus; // throw function pointer to cplusplus function -aka your turn
}

void cplusplus(int which){
	cout<<"You sent c++ a:"<<endl;
	cout<<exceptions[which]<<endl<<endl;
	cplusplushp-=penalty[which];
	playerwins();
	throw player; // throw function pointer to player function -aka your turn
}

int main(){
	void (*handle)(int)=cplusplus; // cplusplus plays first
	int seed =0;
	cout<<"Seed my random generator please!"<<endl;
	cin>>seed;
	rng.seed(seed); // seed the random generator
	while(1){
		int exc;
		try{
			exc = rng()%num; // randomly select an exception to be thrown
			handle(exc); // call function passing the random exception
		}
		catch(void (*a)(int)){ //catch a thrown function pointer 
			handle=a;
			usleep(2000000);
			continue;
		}
	}
	return 0;
}