what does pinmode do in arduino code example

Example 1: arduino pinmode

void setup() {
  pinMode(13, OUTPUT);    // sets the digital pin 13 as output
}

void loop() {
  digitalWrite(13, HIGH); // sets the digital pin 13 on
  delay(1000);            // waits for a second
  digitalWrite(13, LOW);  // sets the digital pin 13 off
  delay(1000);            // waits for a second
}

Example 2: arduino pinMode

pinMode(Pin_number, State);
ex:
pinMode(2, HIGH);

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Misc Example

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