#include "..\..\..\include\dsp25.h"
#include <stdio.h>

void send(int data)
{
  WrData((unsigned int)data);
  ClearBIO();
  while(Is_C25_Read()!=YES);
  SetBIO();
}

int receive(void)
{
  while(Is_C25_Write()!=YES);
  return (int) RdData();
}

void main(void)
{
  char *str;
  int n1,n2,n3,cmd;

  if(SelectBoard(1)!=SUCCESS) {
    perror(" Device not ready");
    exit(1);
  }
  while(1) {
    printf("\nOperator (+/-/q):"); scanf("%s",str);
    if( (*str|32)=='q') exit(1);
    cmd = (*str=='+') ?  0 : 1;
    send(cmd);
    printf("Number 1        :"); scanf("%d",&n1);
    send(n1);
    printf("Number 2        :"); scanf("%d",&n2);
    send(n2);
    n3 = receive();
    printf("Answer = %d",n3);
  }
}