Initialising everything in an array as 0

I want to initialise everything as zero, however my array is declared like this:

Code:

---

int test[x] = {0};

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where x is a non zero positive int, but I get the error message:

58 C:\Documents and Settings\jb\My Documents\a.c variable-sized object may not be initialized
58 C:\Documents and Settings\jb\My Documents\a.c [Warning] excess elements in array initializer
58 C:\Documents and Settings\jb\My Documents\a.c [Warning] (near initialization for `test')

However when i declare it using:

Code:

---

int test[5] = {0};

---

it works fine, any ideas?

Thanks

Are you compiling as C++?

the problem is that x is not constant... And obviously - it means it is not C but C++

No, that's not the problem. When the compile sees something like

Code:

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int array[5] = {0};

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it automatically fills in the zeros and turns that into

Code:

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int array[5] = {0, 0, 0, 0, 0};

---

But with a variable-sized array, of course, it can't do that. Hence the error.

Code:

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58 C:\Documents and Settings\jb\My Documents\a.c variable-sized object may not be initialized

---

Quote:

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Originally Posted by Wiretron

I want to initialise everything as zero, however my array is declared like this:

Code:

---

int test[x] = {0};

---

where x is a non zero positive int, but I get the error message:

58 C:\Documents and Settings\jb\My Documents\a.c variable-sized object may not be initialized
58 C:\Documents and Settings\jb\My Documents\a.c [Warning] excess elements in array initializer
58 C:\Documents and Settings\jb\My Documents\a.c [Warning] (near initialization for `test')

However when i declare it using:

Code:

---

int test[5] = {0};

---

it works fine, any ideas?

Thanks

---

Your problem description is inconsistent. If you replace x with 5 (a non zero positive int) then the line that supposedly doesn't work is the same as the one that does. Please correct your question.

Oh I see how your question is wrong. x is not a non-zero positive int. It is in fact as written - a variable of type int that has been assigned a non-zero, positive value.
You cannot do this when declaring an array.

His question is not wrong. The answers (except from dwks) are.