You have two pairs : new() and delete() and another pair : alloc() and free(). Explain differences between eg. new() and malloc()
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by Dinesh Thakur

1.) “new and delete” are preprocessors while “malloc() and free()” are functions. we dont use brackets will calling new or delete.

2.) No need of allocate the memory while using “new” but in “malloc()” we have to use “sizeof()”.

3.) “new” will initlize the new memory to 0 but “malloc()” gives random value in the new alloted memory location [better to use calloc()]

 new() allocates continous space for the object instace

malloc() allocates distributed space.

new() is castless, meaning that allocates memory for this specific type,

malloc(), calloc() allocate space for void * that is cated to the specific class type pointer.



Dinesh Thakur is a Technology Columinist and founder of Computer Notes and Technology Motivation. Turn Mobile View Off