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Arrays in C++

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Arrays in C++, limitations regarding array size in C++

lijojacobcs	6 Apr, 2006 - 12:44 AM Post #1
New D.I.C Head Joined: 9 Mar, 2006 Posts: 5 My Contributions	In one of my codes , the array size is given as 15000 . But i need an array of size more than 50,000 . But when I set the array size as 50,000 or above , a runtime error is occurring (exiting from the application) . Is there any limitations regarding array size in C++? I cannot use vectors since i have to rewrite almost a huge party of the code.
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sontek	6 Apr, 2006 - 12:47 AM Post #2
D.I.C Regular Joined: 13 Sep, 2001 Posts: 283 Thanked 1 times Dream Kudos: 85 My Contributions	I'm not sure about a C++ specific limitation (I don't code in C++) but creating that large of an array means it needs to allocate that much memory for your application, which i'm sure any PC/OS will not be thrilled about it
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Amadeus	6 Apr, 2006 - 05:39 AM Post #3
g++ -o drink whiskey.cpp Joined: 12 Jul, 2002 Posts: 12,176 Thanked 33 times Dream Kudos: 25 My Contributions	The problem is not a limit on the size of arrays in C++...the problem occurs due to stack size limits in the operating system. Each OS/computer architecture can by different, and will limit the amount of space that can be allocated directly upon declaration. To deal with this, you can either modifythe memory limit settings on your OS, or deal with it through code by dynamically allocating memory as it is required by the program. There is an introduction to dynamic memory allocation here: http://www.cplusplus.com/doc/tutorial/dynamic.html
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