Input

A program can stop for user input, then resume execution, or can use choose boxes or input forms (dialog boxes) for input. You can use several commands to get input:

PROMPT (!=to resume).

DISP FREEZE HALT (!=to resume).

INPUT (`to resume).

INFORM

CHOOSE

Data Input Commands

Key

Command

Description

 

 

 

!°L %IN% :

 

 

 

 

%INFOR%

INFORM

Creates a user-defined input form.

%NOVAL%

NOVAL

Place holder for the INFORM command. Returned when a value is not present in

 

 

an input form field.

%CHOOS%

CHOOSE

Creates a user-defined choose box.

%KEY%

KEY

Returns a test result to level 1 and, if a key is pressed, the location of that key (level

 

 

2).

%WAIT%

WAIT

Suspends program execution for a specified duration (in seconds, level 1).

%INPUT%

INPUT

Suspends program execution for data input.

%PROMP%

PROMPT

Halts program execution for data input.

 

 

 

Using PROMPT, CONT for Input

PROMPT uses the status area for prompting, and allows the user to use normal keyboard operations during input.

To enter PROMPT in a program:

1.Enter a string ( with "" delimiters) to be displayed as a prompt in the status area.

2.Enter the PROMPT command (PRG IN menu).

«… "prompt-string" PROMPT … »

PROMPT takes a string argument from level 1, displays the string (without the "" delimiters) in the status area, and halts program execution. Calculator control is returned to the keyboard.

When execution resumes, the input is left on the stack as entered.

To respond to PROMPT while running a program:

1.Enter your input — you can use keyboard operations to calculate the input.

2.Press !=.

The message remains until you press `or −or until you update the status area.

RPL Programming 1-37