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Malloc

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Started by Miraj March 11, 2000 02:57 AM

4 comments, last by Miraj 24 years, 3 months ago

Miraj

122

Author

March 11, 2000 02:57 AM

Hi again all

Okay I know I''m a pest, but things are improving!

A couple question whenever someone gets the time. Is the malloc function the same as the C++ keyword ''new'' ? And the second question is: How would I convert this line below to pure C sector1.triangle = new TRIANGLE[numtriangles]; (Taken from NeHe''s tutorials by the way, have to place credit where its due, even for one small line)

I know that new allocates dynamic memory, could I do the same thing with malloc? If so how exactly? Thanks again...

-Miraj

Miraj

122

Author

March 11, 2000 04:04 AM

*politely bumps the post a notch and scurries off*

-Miraj

122

March 11, 2000 06:12 AM

My pure C is a little dusty, but I believe this should work:

sector1.triangle = (TRIANGLE*) malloc(sizeof(TRIANGLE)*numtriangles);

[where TRIANGLE is the appropriate triangle struct]

They then can be referenced by sector1.triangle[index]
Remember to: free(sector1.triangle);

SiCrane

11,840

March 11, 2000 05:38 PM

malloc() simply allocates the memory. new, when called on classes, executes its constructor as well as allocating the memory for the class.

Mezz

571

March 11, 2000 05:54 PM

Remember not to mix calls of the memory operators.

that is, if you go
ptr = new int;

don''t go
free(ptr); // should use delete

I''ll just back TV up and say that is the correct
way to call malloc.

Chill,

-Mezz

Miraj

122

Author

March 11, 2000 08:06 PM

Well after 2 days, not only have I gotten the program to function properly but I also learned alot about the differences between C and C++, though not many in some respects I still feel enlightened, heh. Not to mention Malloc and new

Thanks again guys, I dunno what I''d do without ya''s! =)

-Miraj

-Miraj

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🎉 Celebrating 25 Years of GameDev.net! 🎉

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