Why does exit status 1 stray '\302' in program pop up around Serial.println ( "-> Second Service load");? [duplicate]

/* Controlling a servo position using a potentiometer (variable resistor) by Michal Rinott <http://people.interaction-ivrea.it/m.rinott> modified on 8 Nov 2013 by Scott Fitzgerald http://www.arduino.cc/en/Tutorial/Knob */ #include <Wire.h> #include "ds3231.h" #include <Servo.h> int potpin = 0; // Analog pin is used to connect the potentiometer int val; // Variable to read the value from the analog pin int pause = 800; // Delay in open feeders (feed amount) Servo myservo; // create servo object to control a servo #define BUFF_MAX 256 // First Service uint8_t wake_HOUR1 = 12; uint8_t wake_MINUTE1 = 56; uint8_t wake_SECOND1 = 0; // Second Service uint8_t wake_HOUR2 = 18; uint8_t wake_MINUTE2 = 30; // How often to update the information to the standard output (ms) unsigned long prev = 5000, interval = 5000; void setup() { myservo.attach(9); // attaches the servo on pin 9 to the servo object myservo.write (0); // Set the position to 0 Serial.begin (9600); Wire.begin ();   DS3231_init (DS3231_INTCN);   DS3231_clear_a1f ();   DS3231_clear_a2f ();   set_alarm (); } void loop() {  char buff [BUFF_MAX];   unsigned long now = millis ();   struct ts t;   // Output through time (5000ms) The time and alarm clocks ustanovlennnye   if ((now - prev> interval) && (Serial.available () <= 0)) {     DS3231_get (& t);     // Display current time     snprintf (buff, BUFF_MAX, ".% d% 02d% 02d% 02d:.% 02d:% 02d", t.year,              t.mon, t.mday, t.hour, t.min, t.sec);     Serial.println (buff);     // Display a1 debug info     DS3231_get_a1 (& buff [0], 59);     Serial.println (buff);     DS3231_get_a2 (& buff [0], 59);     Serial.println (buff);     if (DS3231_triggered_a1 ()) {       // INT has been pulled low       Serial.println ( "-> First Service load"); myservo.write(10); // sets the servo position according to the scaled value delay(1000); // waits for the servo to get there myservo.write(170); // sets the servo position according to the scaled value delay(1000); // waits for the servo to get there       // Clear a1 alarm flag and let INT go into hi-z       DS3231_clear_a1f ();     }     if (DS3231_triggered_a2 ()) {       // INT has been pulled low       Serial.println ( "-> Second Service load"); myservo.write(10); // sets the servo position according to the scaled value delay(1000); // waits for the servo to get there myservo.write(170); // sets the servo position according to the scaled value delay(1000); }