Thread: Few noobie questions.

Well, I looked through a few books, but I'm still missing a few pritty simple things. These are some pritty basic questions that probably have been asked a few times. (Hopefully basic anyways)

First off when you say (!callfunction()) what does the ! do? Is that like: (callfunction()=0)?

How much can a byte/SHORT/int/LONG integer hold (value-wise)?

How do you tell the size of an array? (IE if I had an array with X values, how do I find X?)

Is a 3D array a valid declaration? (IE I[1][20][10]; )

Is it possible to tell where the ConsoleCursor is currently?

If a pointer points to a 0x(0000^8) adress and you keep adding one to the pointer, will it cycle through every value on your computer?

Can you dynamicaly expand an array? (IE: Add an extra value to an array, so from I[10] to I[11]?)

Thank you.

Byte isint a type in C++? Then why is this a valid declaration??

Code:

byte enemies;

I'm confused .

Umm for the array part you said get the amount in the total size of bytes and devide by any part of the array, but what if all the parts of the array are 0? Or, is 0/0 a valid devision process?




Well, thank you very much for your help, it'll... help alot .

because you can create an alias for another type.. say...

Code:

typedef unsigned char byte;
typedef int INTEGER;
typedef char *String;

Now you can declare variables as:

Code:

byte b = 1;
INTEGER n = 20;
String s = "Blah";

Originally Posted by Blackroot

How much can a byte/SHORT/int/LONG integer hold (value-wise)?

Exactly CHAR_MIN to CHAR_MAX, or UCHAR_MAX; SHRT_MIN to SHRT_MAX, or USHRT_MAX, INT_MIN to INT_MAX, or UINT_MAX; or LONG_MIN to LONG_MAX, or ULONG_MAX. #include <limits.h> [edit]Or #include <climits> (too used to the other board)

Originally Posted by Blackroot

How do you tell the size of an array? (IE if I had an array with X values, how do I find X?)

As stated above, but only when the array name is in scope. If you pass an array to a function, you are only passing a pointer to the first element and such information is lost.

For dynamic containers, like an array that can be resized and played with freely..

Check out the STL, vectors are a good way to go for dynamic arrays.