Is there any danger in calling free() or delete instead of delete[]? [duplicate]

This question already has answers here: Closed 13 years ago. Possible Duplicate: ( POD )freeing memory : is delete[] equal to delete ?

Using strtok() on an allocated string?

Is there anything I should know about using strtok on a malloced string? In my code I have (in general terms)

How does free know how much to free?

In C programming, you can pass any kind of pointer you like as an argument to free, how does it know the size of the allocated memory to free? Whenever I pass a pointer to some function, I have to als

multi dimensional char array?

What I am trying to do is create an 2-d array of character strings The following seg faults instantly, what is wrong?

free lenka歌词？