grab chars adress

[homeless]

i try to save the adress of single char from an char*
something like this will not work

[sub]
static int* m_pPagePosition;
char* &pBuffer;
m_pPagePosition = reinterpret_cast<int*>(&pBuffer); // grab address
[/sub]

 

[ArkM]

The type of pBuffer var is char*& - reference to pointer to char. But references must be initialized in C++. So you can't compile the snippet above!
If you want to save an address of a char you need char* (pointer to char) variable. You can't save it as int* (pointer to int) because of it may be invalid pointer to int (int alignment).
Try to explain your need, please. The snippet above has no sense...

 

[Salem]

> [sub]
It's code, not sub.


--

 

[homeless]

THX ArkM

needed the position into the string, i don't know what a nonsense i've post:

char *ptr = text + 4; // Zeichen 'o'
int offset = ptr - text;

done

 

[ArkM]

OK, pointer arith... Also pay attention to wonderful RTL functions from <cstring>: strchr, strcspn, strpbrk...