Programming
635
Run-Time Errors
Run-Time Errors
Run-Time Errors
Run-Time Errors
The first step in debugging your program is to run it. The graphing calculator
automatically checks each executed command for syntax errors. If there is an error, a
message indicates the nature of the error.
•
To cancel program execution and return to the Home screen, press
N
.
If your program allows the user to select from several options, be sure to run the
program and test each option.
Debugging Techniques
Debugging Techniques
Debugging Techniques
Debugging Techniques
Run-time error messages can locate syntax errors but not errors in program logic. The
following techniques may be useful.
•
During testing, do not use local variables so that you can check the variable values
after the program stops. When the program is debugged, declare the applicable
variables as local.
•
Within a program, temporarily insert
Disp
and
Pause
commands to display the
values of critical variables.
-
Disp
and
Pause
cannot be used in a user-defined function. To temporarily
change the function into a program, change
Func
and
EndFunc
to
Prgm
and
EndPrgm
. Use
Disp
and
Pause
to debug the program. Then remove
Disp
and
Pause
and change the program back into a function.
•
To display the program in the Program
Editor, press
¸
. The cursor appears
in the approximate area of the error.
Summary of Contents for Voyage 200
Page 36: ...Getting Started 36 D B D B Press Result ...
Page 45: ...Getting Started 45 3 0 D B D D B D Press Result ...
Page 46: ...Getting Started 46 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 60: ...Getting Started 60 B D Press Result ...
Page 139: ...Previews 139 8 Complete the operation Press 2 d Steps and keystrokes Display 5 f 2 ...
Page 453: ...Differential Equation Graphing 453 ...
Page 468: ...Tables 468 ...
Page 777: ...Activities 777 ...
