/* A general C++ utility file as used in other programs */
/* Developed by HARDEEP SINGH                           */

/* Copyright: Hardeep Singh, 2001.
   All rights reserved.
   Email: seeingwithc@hotmail.com
   Website: mm.2cent.me
   Use freely but this header and copyright notice should remain intact.
*/

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

#define newpage clrscr()
#define newline printf("\n")
#define clear fflush(stdin)
#define loop for(;;)

enum boolean {false,true};

void readstr(char s[],int maxlen=254)
{
  unsigned short i;
  unsigned int k;
  char *a;

  if (maxlen>254) {
    cout<<endl<<"Function readstr in module myown.h ";
    cout<<"cannot read such a long string.";
    return;
  }
  maxlen++;
  a=new char[maxlen+2];
  k=(int)&a[0];
  a[0]=maxlen;
  clear;
  asm mov ah,0x0A; //for Turbo C++ for DOS only
  asm mov dx,k;
  asm int 0x21;
  i=(short)(((unsigned short)a[1])%256);
  a[2+i]=0;
  strcpy(s,&a[2]);
  delete a;
  newline;
  clear;
}

int readint(char m[]="Enter the number",
	    int low=-32767, int high=32767,
            int ll=1, int lh=1)
{
  int r,s,e1,e2;
  char st[20];

  clear;
  do {
    cout<<endl<<m<<"->";
    readstr(st,11);
    s=sscanf(st,"%d",&r);
    e1=s<1;
    e2=(ll && r<low)||(lh && r>high);
    if (e1)
      cout<<endl<<"Invalid numeric format.";
    else if (e2)
      cout<<endl<<"Number out of bounds.";
  } while (e1 || e2);
  return(r);
}