Dynamic Storage management

In C programs can dynamically allocate and release blocks
of memory by calling malloc, calloc, realloc and
free. Although C++ also has access to these functions
it provides two new operators (not functions) called new
and delete(keywords) which allocate and release
space. Thus

int* int_ptr; int* int_array;

int_ptr = newint;

// allocates memory for an int

int_array = newint [100];

// allocates memory for
// an array of 100 ints

newreturns a NULL pointer if the requested memory cannot
be allocated. The deleteoperator requires a pointer
as its operand.

delete int_ptr;

delete [] int_array;

March 2,1998

// releases memory pointed
// to by int_ptr
// de-allocates the array

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C201 TAM/AGS