Cheat Engine

[Estraik]

I have a problem and I want to know if someone could explain to me in an easy way, what is in C++:


-Call by reference
and
-Call by value

I would really appreciate an explanation.

Thank you in advance.

[pkedpker]

call by reference u get values changed from where you called it..

call by value u get values changed inside the call but nothing gets changed from where you called it.. only get back 1 return if its a function call.

Call by value: http://www.cpptutor.com/call-by-value-in-c++.htm
Call by reference: http://www.cpptutor.com/call-by-reference-in-c++.htm


reference means you passing the address of the datatype so it doesn't copy it.. it just modifies whats already there.


You gotta think about cheat engine memory view thing.

when u do

int aInt = 0;
you get 4 slots with 00's cuz int is 4 bytes (4 slots in memory).

when u call by value u just copy and make 4 more slots.. so you got 8 slots now. But you never access the old 4 slots after the copy is complete.. you just copy em over to new slots.

But by reference/pointer you access old slots you created without copying anything.. It's also much faster.. say you want to modify like 5 MB of memory would you copy it to make 10 MB of slots? or just use the current 5 MB of slots..

Yah that swap example teaches it all the best way possible.. how else can you get more then 1 value back without using pointers/reference

[Estraik]

Thanks a lot!!!!

That was what I was looking for, thank you so much.