new vs malloc
new calls the constructor after allocating space. Smart.
malloc only allocates enough space and its our job to call the constructor to initialize the object.
new is an operator like + sizeof etc. So this will get compiled down to a small fragment of code.
Its a library function. This will be an overhead and will make the size of the executable relatively larger.
Returns appropriate pointer.
Always returns void *
On error it throws an bad_alloc exception. So error handling comes naturally.
On error simply returns NULL. So its our job to perform NULL checking and throw appropriate exceptions.
Size requirement is calculated by compiler.
Size requirement are to be specified explicitely.
Cannot be resized.
Can be resized using realloc().
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