HP (Hewlett-Packard) 50g ユーザーズマニュアル

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«

 “ CHEZY’S EQN” { { “C:” “Chezy’s coefficient” 0} { “R:”

“Hydraulic radius” 0 } { “S:” “Channel bed slope” 0} } {

2 1 } { 120 1 .0001} { 110 1.5 .00001 }  INFORM IF THEN

OBJ

 DROP  C R S ‘C*(R*S)’ NUM “Q” TAG ELSE

“Operation cancelled” MSGBOX END 

»

Running program 

@INFP2 produces the following input form:

Example 3 – Change the field format information list to { 3 0 }  and save the 
modified program into variable INFP3.  Run this program to see the new input 
form:

Function CHOOSE („°L

@)@@IN@@    @CHOOS@) allows the user to create a 

choose box in a program.  This function requires three arguments:

1. A prompt (a character string describing the choose box) 
2. A list of choice definitions {c

1

 c

2

 … c

n

}. A choice definition c

i

 can have

any of two formats:

a. An object, e.g., a number, algebraic, etc., that will be

displayed in the choose box and will also be the result of the
choice.

b. A list {object_displayed object_result} so that object_displayed

is listed in the choose box, and object_result is selected as the
result if this choice is selected.

3. A number indicating the position in the list of choice definitions of the

default choice.  If this number is 0, no default choice is highlighted.