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why doesnt this memory allocation work ?

General and Gameplay Programming Programming

Started by djsteffey November 06, 2001 02:44 PM

2 comments, last by djsteffey 22 years, 5 months ago

djsteffey

1,347

Author

November 06, 2001 02:44 PM

  
CProcessControlBlock**	currentProcessOnDevice;
currentProcessOnDevice = new (CProcessControlBlock*)[args->numDevices];

error is C:\Documents and Settings\Administrator\My Documents\classes\csc246\program3\CSimulatedOS.cpp(27) : error C2143: syntax error : missing '';'' before ''['' this is for a class but it isnt like i am asking you how to program stuff. now that i think about it i dont believe i have ever got dynamic 2d arrays to work in MSVC 6.0 what this is doing is creating an array of pointers. it does know what type CProcessControlBlock is because I am including the header for that class and it would say unndefined type or something if it didnt know the type. "I pity the fool, thug, or soul who tries to take over the world, then goes home crying to his momma." - Mr. T

Anon Mike

1,098

November 06, 2001 03:17 PM

Probably the paranthesis are confusing the compiler. It might think you''re trying to use placement new. Try leaving them out. e.g.

currentProcessOnDevice = new CProcessControlBlock*[args->numDevices];

-Mike

-Mike

Arild Fines

968

November 06, 2001 03:24 PM

  CProcessControlBlock**	currentProcessOnDevice;currentProcessOnDevice = new CProcessControlBlock*[args->Devices];

Dunno why really...maybe the compiler parses it as a cast?

Although...

  vector< vector< CProcessOnDevice > > currentProcessOnDevice;

_might_ be preferrable.

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djsteffey

1,347

Author

November 06, 2001 09:12 PM

thanks guys. I left off the parenthesis and it worked.

"I pity the fool, thug, or soul who tries to take over the world, then goes home crying to his momma."
- Mr. T

why doesnt this memory allocation work ?

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