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HalfPrime · Posted: Sat Jun 28, 2008 1:12 pm Post subject: [C++]Help Resizing array

I'm trying to add new entries into an array, but I have no idea how many entries I'm going to have when the program is run so I need to resize the array each time I want to add an entry.

oib111 · Posted: Sat Jun 28, 2008 1:35 pm Post subject:

May I suggest using linked lists. It is a much easier way of doing this then trying to dynamically size arrays at runtime. Here is a nice tutorial for it:

http://richardbowles.tripod.com/cpp/linklist/linklist.htm

And here is the full source if you would like to look through it and just pick up the gist of it instead of reading the tutorial:

http://richardbowles.tripod.com/cpp/linklist/linklist.cpp

atom0s · Posted: Sat Jun 28, 2008 6:57 pm Post subject:

You could use a vector as well.

http://www.cplusplus.com/reference/stl/vector/
http://www.cppreference.com/cppvector/all.html
http://www.mochima.com/tutorials/vectors.html

And a ton more links for examples and help via Google.

Dark Byte · Posted: Sat Jun 28, 2008 8:32 pm Post subject:

realloc

HalfPrime · Posted: Sat Jun 28, 2008 10:58 pm Post subject:

Thanks for the suggestions, guys. realloc seems like it's exactly what I'm looking for. I'd have to rewrite most of my class to switch to vectors or linked lists, so hopefully I can get realloc to work.

Zand · Posted: Tue Jul 01, 2008 9:01 am Post subject:

You should use calloc() for arrays.

HalfPrime · Posted: Tue Jul 01, 2008 12:22 pm Post subject:

In sources, 9 times out of 10 I see malloc(count*size) instead of calloc(count, size) for arrays. Is there any real difference between them?

oib111 · Posted: Tue Jul 01, 2008 12:36 pm Post subject: