Code doesn't update

[lauwdude]

Hello,

I have some problems with a example that I am making. I want to:
1: send a "pointer to an object" to a other object
2: that object needs to call a function of the object that I send to him.

I made this:

//this is a part of my class:

class aanroepding {
public:
	void laatestzien() { std::cout << "some text"; } //this is the function that is getting called, only when I edit the text, it does not update. 
};
 
class vanafhieraanroepen {
public:
	void callfunctievanandereclass(aanroepding* obj) { obj->laatestzien(); } //this takes the pointer and cals a function of the object
};

// that is a part of the main() :

vanafhieraanroepen testing4; //makes a object with the name testing4
aanroepding* testing5 = new aanroepding; // makes a pointer that points to an object
testing4.callfunctievanandereclass(testing5); //pass the pointer to testing4
delete testing5; //deletes the pointer

When I run it for the first time, then everything works fine, but when I change the text of this class:

class aanroepding {
public:
	void laatestzien() { std::cout << "some text"; } //this is the function that is getting called, only when I edit the text, it does not update. 
};

then he showes me the old text, so it does not update. Does some one see what I did wrong?
Even when I call delete on the pointer obj, then it also does not work.