Arduino Calculator not working

Nnnope it wasn't

Did you also set the Serial monitor to the same speed when you changed it? The speed in the code has to match what the serial monitor is set to.

Still did the same thing as before (even in 115200 baud rate)

Did you do some serial prints to track what your variables are doing?yy

Interestingly enough, i tried that.

I wrote this :

if (Serial.available() > 0) {
    number1 = Serial.parseInt();
    signal1 = Serial.read();
    number2 = Serial.parseInt();
    if (Serial.available() < 1) {
      simpleResolution();
    } else {
      signal2 = Serial.read();
      number3 = Serial.parseInt();
      complexResolution();
    }
    Serial.println(number1);
    Serial.println(number2);
    Serial.println(signal1);
    Serial.println("Result = ");
    Serial.println(result);
    Serial.println();
    Serial.println("Send me another, if you wish");
    Serial.println();
  }
}

It showed me (digited 1+1) 1;1;+
Still, result 0.

tried baud rate 115200 and still same thing.
I right now am starting to get confused

I'll try the older version and see if that works