cant seem to understand what im doing wrong here.

hi my name is chris. I am new to coding and still learning but i cant seem to find the problem here. every time i change what it says i get new error. any help at all would be awesome thank you.

this code is for ldr sensor to trip when light is in the room and turn off when the light is out. the ldr trips a buzzer and red led.

//set pin numbers

const int ledPin = 13;
const int beep = 12;
const int ldrPin = A0;
int Reading = 0; // Value of INPUT
int ldrPin_input = 100;
int LDR = 0;

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

pinMode(ledPin, OUTPUT);
pinMode(beep, OUTPUT);
pinMode(ldrPin, INPUT); }

void loop () {

Reading = analogRead(ldrPin); // read the state of the (ldrPinValue);

if ((Reading) ('<') (ldrPin_input)); {

tone(beep, 100);
analogWrite(ledPin, HIGH);
delay(100);} //read the state of the LDR value

else if (ldrPinValue =< ldrPin_input)
{ noTone(beep);
digitalWrite(ledPin, LOW)
delay(100);
Serial.println("----------- ALARM ACTIVATED -----------") }

{noTone(beep); digitalWrite(ledPin, LOW); Serial.println("ALARM DEACTIVATED");
}

This is pure gibberish:

 if ((Reading) ('<') (ldrPin_input)); {

Try looking at some working code examples. Many come with the IDE.

if ((Reading) ('<') (ldrPin_input)); {

You have never seen any example code that looks like that.

if (Reading < ldrPin_input) {

it says i get new error.

And we've got to guess what the errors are?
Such fun!

thats what im talking about i wrote it out the right way frist and it keeps saying add(here and add) here untill i get what you see and then it says its not right.

if(analogRead(ldrPin) > 100){

that was what i started with.

shadowknight724:
untill i get what you see

I don't see your updated code. Please use code tags.

//set pin numbers

const int ledPin = 13;
const int beep = 12;
const int ldrPin = A0;
int Reading = 0;  // Value of INPUT
int ldrPin_input = 100;
int LDR = 0;



void setup() {
 Serial.begin(9600);

 pinMode(ledPin, OUTPUT);
 pinMode(beep, OUTPUT);
 pinMode(ldrPin, INPUT); }


 void loop () {

   Reading = analogRead(ldrPin);  // read the state of the (ldrPinValue); 
   
   if (Reading < ldrPin_input) {

   tone(beep, 100); 
   analogWrite(ledPin, HIGH);
   delay(100);}   //read the state of the LDR value 
   {Serial.println("----------- ALARM ACTIVATED -----------"); }
  
   
   else   (Reading > ldrPin_input)
  { noTone(beep);
   digitalWrite(ledPin, LOW);
   delay(100);}
   Serial.println("-----ALARM DEACTIVSTED-----"); }

You have posted code without using code tags. The code tags make the code look

like this

when posting source code files. It makes it easier to read, and can be copied with a single mouse click. Also, if you don't do it, some of the character sequences in the code can be misinterpred by the forum code as italics or funny emoticons.
If you have already posted without using code tags, open your message and select "modify" from the pull down menu labelled, "More", at the lower left corner of the message. Highlight your code by selecting it (it turns blue), and then click on the "</>" icon at the upper left hand corner. Click on the "Save" button. Code tags can also be inserted manually in the forum text using the code and /code metatags.
Use a standard indentation to clearly show the code blocks. Never put more than one statement per line. Place any brackets by themselves on a separate line. Use blank lines sparingly, no more than one at a time. Before posting the code, use Ctrl-T in the IDE to reformat the code in a standard format, which makes it easier for us to read.

Also please post any error messages verbatim instead of trying to describe them.

sorry about that first time posting. got it working thank you for all the help.