Onnowpurbo at 09:22, 5 December 2015

2015-12-05T09:22:05Z

← Older revision		Revision as of 09:22, 5 December 2015
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	~~If Statement (Conditional Statement)~~		Sumber: https://www.arduino.cc/en/Tutorial/ifStatementConditional


	The if() statement is the most basic of all programming control structures. It allows you to make something happen or not, depending on whether a given condition is true or not. It looks like this:		The if() statement is the most basic of all programming control structures. It allows you to make something happen or not, depending on whether a given condition is true or not. It looks like this:
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	delay(1); // delay in between reads for stability		delay(1); // delay in between reads for stability
	}		}



			==Referensi==

			* https://www.arduino.cc/en/Tutorial/ifStatementConditional

Onnowpurbo: New page: If Statement (Conditional Statement) The if() statement is the most basic of all programming control structures. It allows you to make something happen or not, depending on whether a give...

2015-12-05T09:21:37Z

New page: If Statement (Conditional Statement) The if() statement is the most basic of all programming control structures. It allows you to make something happen or not, depending on whether a give...

New page

If Statement (Conditional Statement)

The if() statement is the most basic of all programming control structures. It allows you to make something happen or not, depending on whether a given condition is true or not. It looks like this:

if (someCondition) {
// do stuff if the condition is true
}

There is a common variation called if-else that looks like this:

if (someCondition) {
// do stuff if the condition is true
} else {
// do stuff if the condition is false
}

There's also the else-if, where you can check a second condition if the first is false:

if (someCondition) {
// do stuff if the condition is true
} else if (anotherCondition) {
// do stuff only if the first condition is false
// and the second condition is true
}

You'll use if statements all the time. The example below turns on an LED on pin 13 (the built-in LED on many Arduino boards) if the value read on an analog input goes above a certain threshold.

==Hardware Required==

* Arduino or Genuino Board
* Potentiometer or variable resistor

==Rangkaian==

[[Image:AnalogReadSerial BB.png|center|200px|thumb]]

[[Image:AnalogReadSerial sch.png|center|200px|thumb]]

==Code==

/*
Conditionals - If statement

This example demonstrates the use of if() statements.
It reads the state of a potentiometer (an analog input) and turns on an LED
only if the potentiometer goes above a certain threshold level. It prints the analog value
regardless of the level.

The circuit:
* potentiometer connected to analog pin 0.
Center pin of the potentiometer goes to the analog pin.
side pins of the potentiometer go to +5V and ground
* LED connected from digital pin 13 to ground

* Note: On most Arduino boards, there is already an LED on the board
connected to pin 13, so you don't need any extra components for this example.

created 17 Jan 2009
modified 9 Apr 2012
by Tom Igoe

This example code is in the public domain.

http://www.arduino.cc/en/Tutorial/IfStatement

*/

// These constants won't change:
const int analogPin = A0; // pin that the sensor is attached to
const int ledPin = 13; // pin that the LED is attached to
const int threshold = 400; // an arbitrary threshold level that's in the range of the analog input

void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize serial communications:
Serial.begin(9600);
}

void loop() {
// read the value of the potentiometer:
int analogValue = analogRead(analogPin);

// if the analog value is high enough, turn on the LED:
if (analogValue > threshold) {
digitalWrite(ledPin, HIGH);
} else {
digitalWrite(ledPin, LOW);
}

// print the analog value:
Serial.println(analogValue);
delay(1); // delay in between reads for stability
}

Arduino: If Statement Conditional - Revision history

Onnowpurbo at 09:22, 5 December 2015

Onnowpurbo: New page: If Statement (Conditional Statement) The if() statement is the most basic of all programming control structures. It allows you to make something happen or not, depending on whether a give...