/* validate_int
   Author: Murray Saul
   Date: Feb 26, 2008
   Purpose: To demonstrate the use of scanf()'s
            return value to validate scanned input
            for an int...
*/

#include<stdio.h>
void clearInput();
main()
{

  int int_number, result;

  do
  {
   
    printf ("Please enter an integer value: ");
    result=scanf("%d", &int_number);
    clearInput();

  } while (( result != 1) && printf ("Invalid integer value\n"));

  printf ("The valid integer is %d\n", int_number);

} /* End of main() program */
 
void clearInput()
{
  while (getchar() != '\n')
  ;
}