Steps to begin C and Datastructures Programming| Program on Stack

C and Datastructures programming. How to begin C and Datastructures programming. Steps to be followed.We will see example of Stack.

Firstly Identify the problem.
Secondly ,find out the operations to be performed.

STACK: Ordered collection of homogeneous items is Stack.
1) FILO (First in last out)
2)Grows dynamically at one end while another end is fixed.

 Program on Stack

# define Max 100;

struct stack{
                     int top;
                      int item[Max]  ;
};

main()
{
  struct stack s;
 

}
void push(struct stack *ps,int x)
{
if (ps->top==Max-1)
   {
   printf("Stack is full");
   exit();
   }
ps->item[++ps->top]=x;
}

topofstack(struct stack *ps)
   return(ps->item[ps->top]);

int  empty(struct stack *ps)
  {
  return(ps->top==-1);
}

int pop(struct stack *ps)

{
   int x;
  if empty()
  {
    printf("Stack is empty");
   exit();
}
return(ps->item[++ps->top]);

}