Pls help i not very good a c++ or arduino

Projects Programming
1

So i made this code by copying some of the codes from examples and arduino tutorials and a little by my c++ knowledge

int incomingByte = 0;  // for incoming serial data

void setup() {
  Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
\
  // send data only when you receive data:
  if (Serial.available() > 0) {
    // read the incoming byte:
    incomingByte = Serial.read();}
    
   if (incomingByte=108 and 117 and 109 and 105 and 110 and 97);{
    // say what you got:
   digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  Serial.print("Led aprins!");}
  else
  Serial.print("PAROLA GRESITA");
  
  }
}

I get the error
else without a previous if
even if i have a previous if

Thanks for the time

2

if (incomingByte=108 and 117 and oops.
So many "oops" on a single line.

3

elseThat's the orphan else.
Look carefully - there is no previous if.

4

AWOL:
elseThat's the orphan else.
Look carefully - there is no previous if.

I have one how i make it so it will not interact with the other one?

5 
if (incomingByte=108 and 117 and 109 and 105 and 110 and 97);{
    // say what you got:

= Is for assignments.
== Is for comparison.
You shouldn't be using "and" without another comparison, and you shouldn't have a semicolon at the end of the if.

6

AWOL:

if (incomingByte=108 and 117 and 109 and 105 and 110 and 97);{

// say what you got:



= Is for assignments.
== Is for comparison.
You shouldn't be using "and" without another comparison, and you shouldn't have a semicolon at the end of the if.

how i can add more that one value to a entity?

7

I'm sorry, I don't understand your question.

8

in my project i want to write the word "lumina" and the on bord led to light up and if i type something else that lumina i will get the message parola gresita how i can do that without useing ''and''

if (incomingByte==108 and 117 and 109 and 105 and 110 and 97);

?????

9

if (incomingByte==108 and 117incomingByte cannot be both 108 and 117.
Perhaps you mean or?if (incomingByte==108 or incomingByte == 117

10

AWOL:

if (incomingByte==108 and 117

incoming byte cannot be both 108 and 117.
Perhaps you mean or?

if (incomingByte==108 or incoming byte == 117

oh ok i will try somethong else to do my password