[prog] guide to memory in C, the stack, heap?

[Sue Stones]

Just to add to the analogies, one that I like is a stack of trays.  
Certain fast food places have a special place for stacking trays, they 
are in special container with a slot in the top through which trays may 
be added and removed.  Internally the thing is spring loaded to make 
sure that the top tray is always at the right height to be removed from 
the slot, that is as more trays are added the stack is pushed down.

The thing that this example adds is the structure that prevents someone 
from adding or removing items from other parts of the stack.

sue