Casio fx-FD10 Pro User Manual page 136

Prog
Function: This command specifies execution of another program as a subroutine. In the
RUN • MAT 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
• 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 mode, inputting the Prog command and pressing w launches 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.
D D
A A
Prog "D" Prog "D"
C C
Prog "C" Prog "C"
Prog "E" Prog "E"
Level 1 Level 2 Level 3 Level 4
Subroutines
E E I I
Prog "I" Prog "I" Prog "J" Prog "J"
6-15
J J