======switch / case statements   ======

Like **if** statements, **switch...case** controls the flow of programs by allowing programmers to specify different code that should be executed in various conditions.  In particular, a switch statement compares the value of a variable to the values specified in case statements.  When a case statement is found whose value matches that of the variable, the code in that case statement is run.  

The **break** keyword exits the switch statement, and is typically used at the end of each case.  Without a break statement, the switch statement will continue executing the following expressions ("falling-through") until a break, or the end of the switch statement is reached.


===== Example   =====
<code arduino>
  switch (var) {
    case 1:
      //do something when var equals 1
      break;
    case 2:
      //do something when var equals 2
      break;
    default: 
      // if nothing else matches, do the default
      // default is optional
  }
</code>

===== Syntax   =====

<code arduino>
switch (var) {
  case label:
    // statements
    break;
  case label:
    // statements
    break;
  default: 
    // statements
}
</code>

===== Parameters   =====

var: the variable whose value to compare to the various cases

label: a value to compare the variable to

====See also:   ====
[[arduino:control structures:Else | if...else]]

Source: arduino.cc