IR sensor

Projects General Guidance
1

please sir
i need help in my IR sensor program
this is my code and i am facing some problem
please give me some solution.

#include <LiquidCrystal.h>
LiquidCrystal lcd(2,3,5,4,6,11);
void setup() {
pinMode(23,input);
lcd.begin(16,2);

}

void loop() {
int i;
digital read(23);
if{
digital read(i==1);

lcd.print("PURE");
}
else{

digital read(i==0);

lcd.print("NOT PURE");
}

}

2

i am facing some problem

If you tell us what problems then we can give you some help but expecting us to guess you problem and then fix it is a bit much.

Please read this:-
How to use this forum it will tell you how to ask a question and how to post code.

 if{

Is not the way to use an if statement see:- if - Arduino Reference

3

I think you mean first to read the pin into the variable i:

i = digitalRead(23);

Then your if will just be

if (i==1)

And the { goes after the if line which should have no ;

INPUT is upper case and digital read is one word digitalRead

So you full code should probably be: (compiled but untested)

#include <LiquidCrystal.h>
LiquidCrystal lcd(2, 3, 5, 4, 6, 11);

void setup()
{
  pinMode(23, INPUT);
  lcd.begin(16, 2);
}

void loop()
{
  int i;
  i = digitalRead(23);
  if (i == 1)
  {
    lcd.print("PURE");
  }
  else
  {
    lcd.print("NOT PURE");
  }
}