passing objects as function parameters

[sarvari]

hhey sir i need some information about his topic urgently

[Ancient Dragon]

what do you want to know about it? c++ objects are normally passed by reference to avoid expensive duplication and to let other functions use the same object as the calling function.

class MyClass
{
  // blabla
};

void foo(MyClass& obj)
{
    // class passed by reference
}

int main()
{
    MyClass myclass; // create an instance of the class
    foo(myclass); // pass it to another function
}

[CoolGamer48]

They can also be passed as pointers, if you want to use them. Thought I believe it's considered better to use references over pointers when possible.

class MyClass
{
  // blabla
};

void foo(MyClass* obj)
{
    // class passed by reference
}

int main()
{
    MyClass myclass; // create an instance of the class
    foo(&myclass); // pass it to another function

    //or....
   MyClass* myclass = new MyClass;//create a pointer to the class and allocate an object at its location
   foo(myclass);//call the function
   delete myclass;//deallocate the object
}