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12–18 Simple Programming

File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388

Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm

To see the line in the program containing the error–causing instruction, press

. The program will have stopped at that point, (For instance, it might be a

instruction, which caused an illegal division by zero.)

Editing a Program

You can modify a program in program memory by inserting, deleting, and editing

program lines. If a program line contains an equation, you can edit the

equation — if any other program line requires even a minor change, you must

delete the old line and insert a new one.

To delete a program line:

1. Select the relevant program or routine (

label), activate program

entry (

), and press

to locate the program line that

must be changed. Hold the cursor key down to continue scrolling. (If you know

the line number you want, pressing

label nnnn moves the

program pointer there.)

2. Delete the line you want to change — if it contains an equation, press

{



}; otherwise, press

. The pointer then moves to the preceding

line. (If you are deleting more than one consecutive program line, start with the

last line in the group.)

3. Key in the new instruction, if any. This replaces the one you deleted.

4. Exit program entry (

To insert a program line:

1. Locate and display the program line that is before the spot where you would

like to insert a line.

2. Key in the new instruction; it is inserted after the currently displayed line.

For example, if you wanted to insert a new line between lines A0004 and A0005

of a program, you would first display line A0004, then key in the instruction or

instructions. Subsequent program lines, starting with the original line A0005, are

moved down and renumbered accordingly.

To edit an equation in a program line:

1. Locate and display the program line containing the equation.

HP 33S User Manual

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