Prog

Function: This command specifies execution of another program as a subroutine. In the RUN • MAT (or RUN) mode, this command executes a new program.

Syntax: Prog "file name"=

Example: Prog "ABC"=

Description:

•Even when this command is located inside of a loop, its execution immediately breaks the loop and launches the subroutine.

•This command can be used as many times as necessary inside of a main routine to call up independent subroutines to perform specific tasks.

•A subroutine can be used in multiple locations in the same main routine, or it can be called up by any number of main routines.

Main Routine

 

Subroutines

 

A

D

 

 

 

Prog "D"

 

 

 

 

Prog "C"

C

E

I

J

 

 

 

 

 

Prog "E"

Prog "I"

Prog "J"

 

 

Level 1

Level 2

Level 3

Level 4

•Calling up a subroutine causes it to be executed from the beginning. After execution of the subroutine is complete, execution returns to the main routine, continuing from the statement following the Prog command.

•A Goto~Lbl command inside of a subroutine is valid inside of that subroutine only. It cannot be used to jump to a label outside of the subroutine.

•If a subroutine with the file name specified by the Prog command does not exist, an error occurs.

•In the RUN • MAT (or RUN) mode, inputting the Prog command and pressing Ulaunches the program specified by the command.

Return

Function: This command returns from a subroutine.

Syntax: Return=

Description: Execution of the Return command inside a main routine causes execution of the program to stop. Execution of the Return command within a subroutine terminates the subroutine and returns to the program from which the subroutine was jumped to.

Stop

Function: This command terminates execution of a program.

Syntax: Stop=

Description:

•This command terminates program execution.

•Execution of this command inside of a loop terminates program execution without an error being generated.

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