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20070201
8-3-1
Editing Program Contents
8-3 Editing Program Contents
k
Debugging a Program
A problem in a program that keeps the program from running correctly is called a “ bug,”
and the process of eliminating such problems is called “ debugging.” Either of the following
symptoms indicates that your program contains bugs that require debugging.
• Error messages appearing when the program is run
• Results that are not within your expectations
u
To eliminate bugs that cause error messages
An error message, like the one shown below, appears whenever something illegal occurs
during program execution.
When such a message appears, press
J
to display the place in the program where the
error was caused. The cursor will be fl ashing at the location of the problem. Check the “Error
Message Table” (page
α
-1-1) for steps you should take to correct the situation.
• Note that pressing
J
does not display the location of the error if the program is
password protected. Instead, it returns to the program list screen.
u
To eliminate bugs that cause bad results
If your program produces results that are not what you normally expect, check the
contents of the program and make necessary changes.
1
(TOP) ...... Moves the cursor to the top of the
program
2
(BTM) ...... Moves the cursor to the bottom of
the program
Summary of Contents for CFX-9850GB PLUS
Page 19: ...20070201 4 Contents Appendix 1 Error Message Table α 1 1 2 Input Ranges α 2 1 ...
Page 335: ...20070201 u Input Example u Results 6 5 25 Tests ...
Page 361: ...20070201 Calculation Result Output Example p F distribution probability 6 7 15 Distribution ...
Page 435: ...20070201 8 8 2 Program Library egcw w ww w ...
Page 437: ...20070201 8 8 4 Program Library Example 1 Example 2 fw fw baw baw bf ca w w ...
Page 439: ...20070201 8 8 6 Program Library d wba wb w w ...
Page 441: ...20070201 8 8 8 Program Library dw fcde fcde w wfcde daw wfcde w ...
Page 443: ...20070201 8 8 10 Program Library b awaw bwaw aw x d w ...
Page 591: ...20070201 Appendix 1 Error Message Table 2 Input Ranges α ...