error : expected initializer before 'void'

Projects Programming
1

Hii!
I am trying to do code that when i input "parola" by serial monitor it will light up the built in led
but i get the error ''expected initializer before 'void''
What i can do?
The code:

int par;
int perete
void setup() {
  // put your setup code here, to run once:
  pinMode (LED_BUILTIN , OUTPUT);
  Serial.begin(9600); 
}

 void loop() {
  // put your main code here, to run repeatedly:
   Serial.readString(parola);
   perete=buffer;
   if (perete=parola)
   digitalWrite(LED_BUILTIN, HIGH);
}

And the error

Arduino: 1.8.0 (Windows 7), Board: "Arduino/Genuino Zero (Programming Port)"

sketch_sep16a:8: error: expected initializer before 'void'

  void loop() {

 ^

C:\Users\misu\AppData\Local\Temp\arduino_modified_sketch_139765\sketch_sep16a.ino: In function 'void loop()':

sketch_sep16a:10: error: 'parola' was not declared in this scope

    Serial.readString(parola);

                      ^

sketch_sep16a:11: error: 'perete' was not declared in this scope

    perete=buffer;

    ^

sketch_sep16a:11: error: 'buffer' was not declared in this scope

    perete=buffer;

           ^

exit status 1
expected initializer before 'void'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Thanks for the time and maybe the help :slight_smile:

2

Compare these two lines from the start of the sketch. Only one is correct....

int par;
int perete

edit: there are other errors after that though

3

kenwood120s:
Compare these two lines from the start of the sketch. Only one is correct....

int par;

int perete




edit: there are other errors after that though

solved it

int par;
int perete;
4

now i get this

no matching function for call to 'Uart::readString(int&)'

how i can make the code to react only when i input ''parola''

5

That's not how you use readString(). It returns a String.
Instead of:

Serial.readString(parola);

it should be:

String parola = Serial.readString();

This is a bit confusing because there is a typo on the readString() reference page:

where String is miscapitalized as string but they are very different things:

Generally we discourage the use of String and instead recommend using strings. Do a little searching to find lots of information on why this is so.