Scala do...while Loop
Scala LoopsUnlike the while loop, which tests the loop condition at the top of the loop, in Scala, the do...while loop checks its condition at the bottom of the loop.
The do...while loop is similar to the while loop, but the do...while loop ensures that the loop is executed at least once.
Syntax
In the Scala languagewhileThe syntax of the loop is:
do {
statement(s);
} while( condition );
Flowchart
Please note that the condition expression appears at the bottom of the loop, so the statement(s) in the loop are executed at least once before the condition is tested.
If the condition is true, the control flow jumps back to the do above, and the statement(s) in the loop are executed again.
This process repeats until the given condition becomes false.
Example
Example
object Test {
def main(args: Array[String]) {
// local variable
var a = 10;
// do loop
do{
println( "Value of a: " + a );
a = a + 1;
}while( a < 20 )
}
}
def main(args: Array[String]) {
// local variable
var a = 10;
// do loop
do{
println( "Value of a: " + a );
a = a + 1;
}while( a < 20 )
}
}
Executing the above code produces the following output:
$ scalac Test.scala $ scala Test value of a: 10 value of a: 11 value of a: 12 value of a: 13 value of a: 14 value of a: 15 value of a: 16 value of a: 17 value of a: 18 value of a: 19Other Extensions