C++ passing an object -

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i'm learning c++, doesn't works expected. made classes bowlinggame (just text-based) , works well. want pass object of bowlinggame class, called scorecalculator.

the header file looks like:

#ifndef scorecalculator_h #define scorecalculator_h #include "bowlinggame.h"  class scorecalculator { private:     bowlinggame * game; public:     //constructor     scorecalculator(const bowlinggame &game);      //setters     void setgame(const bowlinggame &game); };  #endif // scorecalculator_h

and implementation looks like:

#include "scorecalculator.h" #include "bowlinggame.h" #include <iostream>  using namespace std;  scorecalculator::scorecalculator(const bowlinggame &game) {     setgame(game); }  void scorecalculator::setgame(const bowlinggame &gamse) {     //* game = gamse; fails     //cout << gamse.getlastframenummer(); works }

i save 'bowlinggame object' in instance var game, reason console application crashes. i've no idea i'm doing wrong. failure in rule: * game = gamse; looked examples on internet, can't find solution. 

//* game = gamse; fails

you haven't allocated game. pointer not pointing valid yet. have create new game object point to.

do this

game = new game(gamse);

assuming game has accessible copy constructor.

also don't forget delete game in destructor or earlier if don't need more. or better use smart pointer `game.


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