Simple question

[Mathias S]

struct Data { int x; int y; }; Data* pData = new Data[30]; how do I access value x in item 5 in the Data array pData[5]->x = 3; // err pData[5].x = 3; //err /Mathias

[valikac]

The first solution is correct. The fifth item is index 4. Kuphryn

[Mathias S]

My bad. pData[5]->x = 3; // err is not error.. it works.. i got a complie error. but now when i watch more carefully I saw that the error was something else.. aahh stupid me.. been working to much today. /Mathias

[Joe Woodbury]

pData[5].x = 3; Since this is an array of structures, not pointers, this is the correct way to access it. (The brackets dereference the pData pointer.) Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

[Ravi Bhavnani]

Joe Woodbury wrote: The brackets dereference the pData pointer. Actually they don't. The dereferencing has to happen explicitly, as in:    *((Data *) pData[5]).x = 3;

PLEASE IGNORE THIS INCORRECT POST.  I PROMISE NOT TO REPLY TO ANY CP POSTS UNTIL I'M REASONABLY AWAKE.

/ravi Let's put "civil" back in "civilization" Home | Articles | Freeware | Music ravib@ravib.com

[Tim Smith]

No, the second compiles just fine. He allocating an array of structures, not an array of pointers to the structure. Tim Smith I'm going to patent thought. I have yet to see any prior art.

[Ravi Bhavnani]

Gak! You're right of course! :-O /ravi Let's put "civil" back in "civilization" Home | Articles | Freeware | Music ravib@ravib.com