/* program to allow experimentation of several stack implementations */

#include <stdio.h>
#include <string.h>

/* include successive stack implementations with the following line */
#include "stack-lab-1.c"

int
main ()
{
  /* set up stack variable */
  stringStack myStack;
  initialize(&myStack);
 
  printf("program to follow status of string variables during processing\n");
  printf("progress commentary      a     b     c     d     e     f     g     h\n");

  char a[6] = "apple";
  char b[6] = "beans";
  char c[6] = "corn";
  printf("initialize a, b, c  ");
  printf(" %5s %5s %5s\n", a, b, c); 

  /* push a, b, c on stack */
  push(&myStack, a);
  push(&myStack, b);
  push(&myStack, c);

  /* pop stack 3 times */
  char* d = pop(&myStack);
  char* e = pop(&myStack);
  char* f = pop(&myStack);
  
  printf("pop to get d, e, f  ");
  printf(" %5s %5s %5s %5s %5s %5s\n", a, b, c, d, e, f); 

  /* change a, e */
  strcpy(a, "fruit");
  strcpy(e, "peas");
  printf("change a, e         ");
  printf(" %5s %5s %5s %5s %5s %5s\n", a, b, c, d, e, f);

  /* create new strings g, h and push on stack */ 
  char g[6] = "Beet";
  char h[6] = "Olive";
  push(&myStack, g);
  push(&myStack, h);

  printf("push new g, h       ");
  printf(" %5s %5s %5s %5s %5s %5s %5s %5s\n", a, b, c, d, e, f, g, h);

  /* change g */
  strcpy(g, "Dill");
  printf("change g            ");
  printf(" %5s %5s %5s %5s %5s %5s %5s %5s\n", a, b, c, d, e, f, g, h);

  return 0;
}