When using the Validation facility you can set an Input message to tell the user what they should enter like "Enter a value between 1 and 100". You can set an Error message to show if they do not enter a value that is valid.
Depends on what you mean by troubleshoot. Excel does have several auditing functions and error messages.
A REF error message is a message that is used in the Windows Excel program, part of the Office package, in that there is an error input or output in an excel cell data pack.
#NAME! #REF! #DIV/0! #N/A! #NUM! #VALUE!
They tell the user that they have entered incorrect data and should tell them what they have done wrong and what is acceptable. Without the messages, the user will not know what the problem is.
There is no formula error button in Excel. However, there is an Error Checking button on the Formulas ribbon in the Formula Auditing section in Excel 2007.
Enter valid characters or unprotect the cell. If you ask another question to identify the exact error message, you probably will get a more useful answer.
The C standard library provides stderr as the standard error file. It is an output file, much like stdout, except it cannot be redirected via the command line. By default, error messages via stderr are output to the console, the same as the undirected stdout. However, the programmer may choose to redirect stderr to a disk file or allow the user to choose a location via command line switches. Although error messages can also be output to stdout (or indeed to any output stream), it is best to keep error messages separate from the standard output stream. For instance, the user may choose to redirect standard output to a disk file or to the input stream of another program, while error messages are directed to the console.
Common ways to indicate that a cell contains an error or message in Excel are through error indicators (green triangle in the top left corner of the cell), error messages, or custom formatting (e.g., changing the cell color or font style). You can also use conditional formatting to highlight cells with errors or messages.
how do you find marginal product on excel
That will depend on what the error is. Different problems result in a formula not being able to calculate. The appropriate error message for the situation will be displayed. Here are error messages you will see: #REF! #DIV/0! #NAME? #NULL! #N/A! #NUM! #VALUE!
the box into which you input data
There are various kinds of errors in Excel that you will see. An error reference in a cell always starts with the # symbol. If the cell is a continuous line of them, it means the cell needs to be widened to show the value properly. Other than that, the # will be followed by a word to indicate the specific error and will be followed the ! symbol. Some of the ones you may see are as follows, although there are many others: #NUM! #REF! #DIV/0! #NAME! The help system will give you assistance on what can be the cause of the particular errors you come across.