C++ pointer tutorial #1

[0121ryanh117]

Pointers simply allow direct memory access. That is the basics. You can assign an address for a pointer to point to in anyway you want. for example.

int *ptr = (int*)100;

[duckie12791]

hey bro, do a search for camtasia, its the best screen recording program ive found, you can find a free download of it somewhere on the internet

[rhillner]

Quite a few mistakes are in this video...

You should AlWAYS initialise a point = 0, otherwise it can overwrite other memory cells..

What you said at the beginning isn't true, you can access the data that the variable is pointing to:

int x = 4;

int *px = NULL;

px = &x;

cout << *px << endl;

Would output 4.

[jrockpunk1]

rhillner : yes i know that now about initialising to a null value, but didnt at the time :P and i never said you couldnt access the value allocated to the memory address. i just said that by default the pointer point to a men=mory cell. you can then display the value of the variable allocated to that memory cell by doing what you did.

[jwtguy]

You explained the concept of pointers quite well, but you didn't explain the use of astreiks and the address caller. Other than that, it will be a good intro to someone who knows nothing about pointers. Good Job!

[jrockpunk1]

jwtguy : thanks. and i know im not very good at explaining. i dint really explain the concept of dereferencing etc.

[jwtguy]

Better job than I could have done

[jrockpunk1]

lol i doubt it. but thanks :D