WHAT IS A STACK?

A stack is a last in- first out (LIFO) abstract data type and linear data structure.
It is small data structure having only two fundamental operation only.
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Those fundamental operations are:-
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a.push (insert an element in top of stack)
b.pop  (remove an element from top of stack)
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And some other extra functions understanding
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c.printing (printing of all element present in stack)
d.pick       (getting the element at top of stack but do not remove)


It follow some rules:-
 rule1:
   Data element can be inserted at the top of the stack.
 rule2:
  Data element can be deleted/remove from the top of the stack.




LINKS
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1.WIKI for STACK
2.STACK IMPLEMENTED USING ARRAY IN C
3.STACK IMPLEMENTED USING LINKED LIST IN C
4.WIKI BOOK FOR STACK
5. ADT FOR STACK IMPLEMENTATION