if else problem

Projects Programming
1

int ledPin = 13;
int inputPin = 3;
int val = 0;

void setup()
{
pinMode(ledPin, OUTPUT);
pinMode(inputPin, INPUT);
}

void loop()
{
if (inputPin == val );
{
digitalWrite(ledPin, LOW);
}
if else (inputPin == val);
{
digitalWrite(ledPin, HIGH);
}

sketch_dec25b.cpp: In function 'void loop()':
sketch_dec25b:16: error: expected (' before 'else' sketch_dec25b:19: error: expected }' at end of input

what happen i can't understand, pliz help me

2

The semicolon at the end of this line:

if (inputPin == val );

terminates the if statement. So it means "if inputPin equals val, do nothing"

The loop() should be:

void loop()
{
 if (inputPin == val )
  {
    digitalWrite(ledPin, LOW);
  }
 if else (inputPin == val)
  {
    digitalWrite(ledPin, HIGH);
}

Pete

3

sketch_dec25a.cpp: In function 'void loop()':
sketch_dec25a:16: error: expected (' before 'else' sketch_dec25a:19: error: expected }' at end of input

but it send this error

4

i have solve it . thank u for your help

int ledPin = 13;
int inputPin = 3;
int val = 0;

void setup()
{
pinMode(ledPin, OUTPUT);
pinMode(inputPin, INPUT);
}

void loop()
{
if (inputPin <= val )
{
digitalWrite(ledPin, LOW);
}
else
{
digitalWrite(ledPin, HIGH);
}
}