ENTER THE NUMBER 1,2 OR 3? 1                                                    
THE ON-GOSUB STATEMENT BRANCHED TO SUBROUTINE #1                                
ENTER THE NUMBER 1,2 OR 3? 2                                                    
THE ON-GOSUB STATEMENT BRANCHED TO SUBROUTINE #2                                
ENTER THE NUMBER 1,2 OR 3? 3                                                    
THE ON-GOSUB STATEMENT BRANCHED TO SUBROUTINE #3                                
ENTER THE NUMBER 1,2 OR 3? 4                                                    
THE ON-GOSUB STATEMENT ENTER THE NUMBER 1,2 OR 3? 0                             
THE ON-GOSUB STATEMENT ENTER THE NUMBER 1,2 OR 3? -999                          
