If it is not an integer
You declare a variable to what you need it to be
int a;
double b;
string c;
OK, i know
I declare
int N;
and after that as the situation changes I give a value to N, like N = 2 or N = 1 etc,
N can be 0>, 0< or 0.
but before these situations N does not have a value, I need to do something when N still does not have value.
Try with NULL: Void Type and NULL Constant
thank you again.
| It always has a value. If you don't give it one, it is random. Either give it one, or add a boolean variable that states set or not. | m_shafiei2006: N can be 0>, 0< or 0. but before these situations N does not have a value, I need to do something when N still does not have value. |
| NULL is only for strings and pointers. | drazen64: Try with NULL: Void Type and NULL Constant |
WHRoeder:
OK, thanks, so I need to use another trick.
| It always has a value. If you don't give it one, it is random. Either give it one, or add a boolean variable that states set or not. | m_shafiei2006: N can be 0>, 0< or 0. but before these situations N does not have a value, I need to do something when N still does not have value. |
| NULL is only for strings and pointers. | drazen64: Try with NULL: Void Type and NULL Constant |
HI
How do I write that an variable is (or not) an integer, or my integer variable does not have value ?