To take a variety of different actions based on the value of a single variable, multiple if..elsif tests are verbose and repetitive.
An alternative is to use a case statement.
This begins with the word case followed by the variable name to test.
Then comes a series of when sections, each of which specifies a "trigger" value followed by some code.
This code executes only when the test variable equals the trigger value:
i = 1 case( i ) # www. j a v a 2 s. c o m when 1 then puts("It's Monday" ) when 2 then puts("It's Tuesday" ) when 3 then puts("It's Wednesday" ) when 4 then puts("It's Thursday" ) when 5 then puts("It's Friday" ) when (6..7) then puts( "It's the weekend! " ) else puts( "That's not a real day!" ) end