Arena storage pool: Difference between revisions

Uninitialized memory is allocated using the malloc function. To obtain the amount of memory that needs to be allocated, sizeof is used. Sizeof is not a normal C function, it is evaluated by the compiler to obtain the amount of memory needed.

<lang c>int *var = malloc(n*sizeof(int));

Since pointers to structures are needed so frequently, often a

typedef will define a type as being a pointer to the associated structure.

One can allocate space on the stack using the alloca() function. You do not

free memory that's been allocated with alloca

An object oriented approach will define a function for creating a new object of a class.

In these systems, the size of the memory that needs to be allocated for an instance of the