C++ Memory Management: Why does declaring an array cause my program to crash?

Q: Why does declaring an array cause my program to crash?

Code:

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double x[500000];

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A: Because such a large piece of memory exceeds the stack size (a stack overflow). You need to allocate the memory on the heap instead:

Code:

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double* x = new double[500000];

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Don't forget to delete the memory (with 'delete[]') after you are finished with it to avoid memory leaks.


FAQ contributed by: [Kevin Hall]
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