/*
 **************************************************************************
 * Program name : 058_Detect_any_error_while_input.cpp (Version 1.00)     *
 * Author       : Duck Wong                                               *
 * Language     : C / C++                                                 *
 * Compiler     : Boodshed Dec-C++ compiler Ver 3.95                      *
 * Computer     : PII350                                                  *
 * O/S          : Windows 98                                              *
 **************************************************************************
 * Version 1.00 : 2001/01/22 - first version                              *
 **************************************************************************
*/
#include <stdio.h>
#include <stdlib.h>   

void SkipLine (void)
{
 scanf( "%*[^\n]" );
 scanf( "%*1[\n]" );
}

main (void)
{
 int X,Matched;

 for ( ; ; )
 {
  printf ( "Enter an integer number (from 0 to 100) : ");
  Matched = scanf ( "%d" , &X );
  if (Matched == 0)
  {
   printf ( "I need a real number. \n" );
   SkipLine( );
   continue;
  }
  else if (X < 0)
  {
   break;
  }
  else if (X > 100)
  {
   printf ( "The number must be within the range of 0 to 100. \n");
   SkipLine( );
   continue;
  }
  else
  {
  printf ( "%d\n\n" , X );
  }
  }
  system("PAUSE");
  return 0;
}