This is a implementation of a Stack using pointers. The basic thing is the structure of tPilha is

[code lang="C"]
constant MAXPILHA = 100;
tipo tPilha {
inteiro dados[MAXPILHA];
inteiro *topo;
}; [/code]

Where *topo is a pointer to the first element in the stack. When you`re going to add a new one you verify if the stack is full, if it ins`t you put the data in a position in the stack and change the *topo. When removing, you decrement one in pointer *topo. Then it will reference the element that was there before.

(I had an enunciation but it was too big to translate)

stack with pointers implementation!

Regards,
Matheus

PS: You can see the enunciation in portuguese and then use google translate to translate it
Continue reading Stack, using pointer, Data Structure.