// goto.ino

// Reason to avoid goto statement:
// makes the logic of the program complex and tangled;
// harmful construct and a bad programming practice;

// How to avoid goto statement:
// Try use of break and continue statements.

void doSomething() {
  Serial.println("done");
  // goto jumpLabel; // error
}

int main() {

  // setup
  init();
  Serial.begin(9600);

  // loop
  for (;; delay(5000)) {

    /* ----------------------------------- */
    // goto: jump to a label;
    int x = 1;
    Serial.println(x); // 1
    x = 2;
    goto jumpLabel;
    Serial.println(x);
    x = 4;
    Serial.println(x);
jumpLabel:
    Serial.println(x); // 2
    x = 8;
    Serial.println(x); // 8
    goto insideAnotherScope;
    x = 16;

    /* ----------------------------------- */
    // label ignores block scope
    {
//insideAnotherScope:
      int x = 32;
      Serial.println(x);

insideAnotherScope:
      Serial.println(x); // 64 error flow!

      x = 64;
      Serial.println(x); // 64
    }
    /* ----------------------------------- */

  }
  return 0;
}