csample1.c

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/* CSAMPLE1.C:  C166/C167 COMPILER Sample Program */
/* Copyright KEIL ELEKTRONIK GmbH, 1992-1997      */

#include <stdio.h>                             /* define I/O functions */

extern unsigned int getnumber (void);
extern void output (int);
extern void serinit (void);

void main (void)  {                            /* main program */
  int number1, number2;                        /* define operation registers */
  bit operation;                               /* define operation */

  serinit ();                                  /* setup serial port control */

  printf ("\n\nC166/C167 COMPILER demostration program\n\n");

  while (1)  {                                 /* repeat forever */
    number1 = getnumber ();                    /* read number1 */
    number2 = getnumber ();                    /* read number2 */
    printf ("Input operation: '+' (ADD) or '-' (SUB) ? ");
    operation = (getchar () == '+');           /* get operation */
    output (operation ? (number1 + number2)    /* perform operation */
                      : (number1 - number2) );
  }
}