C: modifying const data in an array using pointer

Question

I have an const array in global scope like this:

const long array_test[5] = {1, 2, 3, 4, 5};

How do I modify the elements of the above array at runtime using a pointer?

If you manage to do it, you're invoking undefined behavior. – Fred Larson Jun 10 '14 at 15:09 — Fred Larson, Jun 10 '14 at 15:09

score 0 · Answer 1 · answered Jun 10 '14 at 15:04

0

In no way. You can't modify const objects.

answered Jun 10 '14 at 15:04

The Paramagnetic Croissant

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haccks · Answer 2 · 2014-06-10T15:10:37.517

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You can't. The const keyword is used to create a read only variable. Once initialised, the value of the variable cannot be changed but can be used just like any other variable. That means, a const qualified variable must not be assigned to in any way during the run of a program.

edited Jun 10 '14 at 15:10

answered Jun 10 '14 at 15:05

haccks

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C: modifying const data in an array using pointer

2 Answers2