void freeArray(int **a, int m) {
int i;
for (i = 0; i < m; ++i) {
free(a[i]);
}
free(a);
}
Refactorings
No refactoring yet !
black-fox.myopenid.com
December 1, 2009, December 01, 2009 17:21, permalink
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you may want some more checks (depending on how you work with the array elsewhere)
void freeArray(int **a, int m) {
int i;
if (a) {
for (i = 0; i < m; ++i) {
if (a[i]) {
free(a[i]);
}
}
free(a);
}
}
kulp
December 3, 2009, December 03, 2009 21:52, permalink
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black-fox: it is never necessary to check for (x == NULL) before doing free(x). free(NULL) is guaranteed by the C standard to do nothing. However, your first check "if (a)" may be a good idea, depending on your philosophy.
Is this the correct way to free memory of a multidimensional array in C ?