new vs malloc and free vs delete explained with simple example
by malloc() and free() are the library functions provided by the C which can be used to allocate and deallocate memory at runtime, whereas new and delete are the the operators provided by C++ which can be used to allocate and deallocate memory at runtime.
The basic difference between new and malloc() is that memory allocation using new calls the constructor which initializes the memory. In case of malloc(), returned memory is uninitialized and needs to be initialized explicitly.
Similarly, deallocating memory using delete calls the destructor and hence allowing to do a proper cleanup whereas in case of free(), destructors are not called and hence cleanup needs to be done prior free() call. Let’s look into some more difference between these functions.