Thread: How to make my class globally accessible

ok

i don't know how to deal with this one. I have a class like this:


file one :

Code:

class X : public Y {

public:
  virtual int query(int, int);
  // constructor
  X(int, int);
  
  ~X();
  
private;

  int *M
  
  int *N

}

file two:

Code:

class Y {
public:
	// returns index of RMQ[i,j]
	virtual int query(int, int) = 0;
};

And i construct my M and Nby calling :

Code:

X Y(a,b);

and afterwords by calling

Code:

result = Y (c,d)

i get my result. The problem is I need to be able to call result = Y (c,d) from outside my main function and get results but i don't know how to do this.


So I want to be able to do something like this.

Code:

#include <iostream>
int g;

void func2(int *h){
*h = g;
}

void func(int *g){
*g = 1;
}

void func1(int f){
g = f;
}

int main ()
{
func(&g);
int p = 7;
func1(p);
int h ;
func2(&h);
std::cout << h << std::endl;
return 0;
}

however i have no clue how to do this with classes.

thank you

baxy

well this is what i am trying to avoid since passing variables would require to modify a large section of code involving ca. 50 functions (func prototypes, recursive calls , callbacks ...) and since these are not simple to read or understand i don't want to do that ...

i just wanna be able to get my data at a certain point in the code..

I'm not clear on what the problem is. It sounds like you want to use X* type parameters. A class pointer works just like a regular pointer, too. So you can do normal construction and pass it in like g(&xObj);

If you have to construct a global object, the parameters need to be known at compile time. Global objects are completely constructed before main executes.

No i did not write those and i have no time to do it all over again that would take me a couple of months. So i need this bypass somehow. There has to be the way... (though i am googling like crazy and not finding anything similar to what i need )