HP 3000 Manuals

Using the 900 Series HP 3000: Advanced Skills Module 6: Variables and Expression

Challenge Test 

   1.  Which of the following is a legal variable name:

          a.  VAR_1

          b.  VAR-1

          c.  VARIABLE#1

          d.  VARIABLE_1

          e.  VAR 1

          f.  1_VAR

   2.  Which of the following system-defined variables have values that
       can be altered?

          a.  HPPROMPT

          b.  HPJOBLIMIT

          c.  HPSESLIMIT

          d.  HPPATH

   3.  TRUE OR FALSE

       User-defined variables can have real numbers (decimals or
       fractions) as values.

   4.  TRUE OR FALSE

       You can set a variable to a specific value in this manner:

            SETVAR VARIABLE1,5

   5.  How would you display the value set in question 4?

   6.  How would you print this message on the screen with or without
       using variables:

            HELLO -- WELCOME TO THE ADVANCED SKILLS COURSE

   7.  How would you prompt a user for his or her name and then print
       this message:

            HELLO username -- WELCOME TO THE ADVANCED SKILLS COURSE

   8.  Which series of statements is correct for prompting a user for an
       integer value (VAR_A), adding 2 to that value, assigning the
       result to VAR_B, and then displaying VAR_B?

a.          INPUT VAR_A;PROMPT="What is the value of variable A?
            SETVAR VAR_B,VAR_A + 2
            SHOWVAR VAR_B

b.          INPUT VAR_A;PROMPT="What is the value of variable A?"
            SETVAR VAR_B,!VAR_A + 2
            SHOWVAR VAR_B

c.          INPUT VAR_A;PROMPT="What is the value of variable A? "
            SETVAR VAR_A,!VAR_A
            SETVAR VAR_B,VAR_A + 2
            SHOWVAR VAR_B

   9.  Compare the following command files, CFA and CFB. Answer the
       questions about them:

       CFA:

            INPUT NAME;PROMPT="What is your name (enter // to stop): "
            IF NAME <> `//' THEN
               INPUT COUNTRY;PROMPT="What is your native country &
               (8 characters or less): "
               ECHO *** HELLO !NAME FROM !COUNTRY ***
            ELSE
               ECHO ***SORRY, NO MESSAGE***
            ENDIF

       CFB:

            INPUT NAME;PROMPT="What is your name (enter // to stop): "
            WHILE NAME <> `//' DO
               INPUT COUNTRY;PROMPT="What is your native country &
               (8 characters or less): "
               ECHO *** HELLO !NAME FROM !COUNTRY ***
               INPUT NAME;PROMPT="What is your name (enter // to stop: "
            ENDWHILE
            ECHO ***SORRY, NO MESSAGE***

       If you respond in the following manner to CFA and CFB, what
       happens in each case?

-------------------------------------------------------------------------------------------------
|        |                            |                            |                            |
|        |         Responses          |            CFA             |            CFB             |
|        |                            |                            |                            |
-------------------------------------------------------------------------------------------------
|        |                            |                            |                            |
| a.     | JULIO                      |                            |                            |
|        | SPAIN                      |                            |                            |
|        |                            |                            |                            |
| b.     | //                         |                            |                            |
|        |                            |                            |                            |
| c.     | GINA                       |                            |                            |
|        | ITALY                      |                            |                            |
|        | //                         |                            |                            |
|        |                            |                            |                            |
-------------------------------------------------------------------------------------------------

MPE/iX 5.0 Documentation