Search code examples
c++arduinoarduino-c++

Why same char is not equal

I have a simple code.

void setup() {
   Serial.begin(9600);
}

void loop() {
   if(Serial.available()) {
      char incomingChar = Serial.read();
      char testChar = ".";

      Serial.println(incomingChar);
      Serial.println(incomingChar == testChar);
   }
}

I opened serial monitor interface. I set baud to 9600 and "No line ending" and was typing: a, b, . output is:

14:38:35.675 -> a
14:38:35.675 -> 0
14:38:37.105 -> b
14:38:37.105 -> 0
14:38:38.557 -> .
14:38:38.557 -> 0

Why char . from serial port is not equal to .?

Solution

  • You should change "." to '.'.

    "" means string not a char