/*
This is skeleton code as of Program 2.
Small changes may be made for later programs.
*/

#define DS_SIZE 10000

#include <stdio.h>
#include <stdlib.h>

#define T0 500
#define T1 501
#define SP reg[0]
#define FP reg[1]
#define BUFFER_SIZE 200

int ds[DS_SIZE];
int reg[4];
char buffer[BUFFER_SIZE];

char *stringlist[] = {};

void readstring(int loc)
{
   // accepts newline-terminated from keyboard and
   // stores characters in ds[] beginning at loc
   fgets(buffer, BUFFER_SIZE, stdin);   // keyboard input
   int i = 0;
   while (buffer[i])   // copy buffer to position in ds[]
   {
      ds[loc + i] = buffer[i];
      i++;
   }
   ds[loc + i] = 0;    // terminator
}

void writestring(int loc)
{
  // displays string beginning at loc << endl;
   int i = 0;
   // copy string from ds to buffer
   while (i < BUFFER_SIZE - 1 && ds[loc + i])
   {
      buffer[i] = ds[loc + i];
      i++;
   }
   buffer[i - 1] = '\0';  // terminator
   printf("%s", buffer);   // display
}

int readint()
{
   // reads integer from the keyboard
   fgets(buffer, BUFFER_SIZE, stdin);
   buffer[strlen(buffer) - 1] = '\0';   // clear '\n;
   return atoi(buffer);
}

int main()
{
   SP = 500;   /* empty stack */
}