What is the difference between new and malloc in c++?

What is the difference between new and malloc?

C++ programming, Interview questions, C++ programming Interview-questions,

YasminRadwan26

2022-06-25

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Answer:

See the following comparison chart for malloc and new (malloc vs new):

Feature	`new`	`malloc`
Supported language	C++ specific features	Supported by both C and C++
Type	`new` is an operator that takes a type and (optionally) a set of initializers for that type as its arguments.	`malloc()` is a library function that takes a number (of bytes) as its argument.
Returns	Returns a pointer to an (optionally) initialized object of its type which is type-safe.	It returns a `void*` pointing to uninitialized storage which is type unsafe.
On failure	It throws bad_alloc exception on failure.	Returns `NULL`
Required size	Calculated by compiler	Must be specified in bytes
Handling arrays	Has an explicit version	Requires manual calculations
Use of constructor	Yes. Operator new call the constructor of an object.	No
Overridable	Yes.	No
Deallocation	memory allocated by malloc() is deallocated by free().	Objects created by new are destroyed by delete.
Initialization	The operator new could initialize an object while allocating memory to it.	The malloc returns an uninitialized block of memory.

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