/**************************************************************************
  GDB Test File 1 - contains several errors
***************************************************************************/

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

#define ERROR_VALUE -1
/**************************************************************************/

int Factorial( int value ) {
    int counter, prod;

    if ( value < 0 ) {
	fprintf(stderr,"\nERROR: cannot calculate factorial for %d < 0\n",value);
	return( ERROR_VALUE );
    } else if ( value == 0 ) {
	return( 1 );
    } else {
	prod = 1;
	for ( counter = 1; counter <= value ; counter += 1 );
	{
	    prod *= counter;
	} /* for */
    } /* if */
    return( prod );
} /* Factorial */

/**************************************************************************/

void main( void ) {
    int value, EndOfFileFlag, ret_value;

    for( ; ; ) { 
	printf("\nEnter a number [<CTRL>-D or -999 for EOF]:);
	EndOfFileFlag = scanf("%d",value);
      if ( EndOfFileFlag == EOF ) break;
      if ( value == -999 ) break;
      if ( EndOfFileFlag != 1 ) {
	    fprintf(stderr,"\nERROR: cannot calculate factorial for char or string\n");
	    exit(-2);
	} /* if */
	ret_value = Factorial( value );
	if (ret_value != ERROR_VALUE ) {
	    printf("\n%d factorial is %d\n",value, ret_value );
	} /* if */
    } /* for */
} /* main */