Function of multiple outputs produces only one answer or three with a redundant 'ans' . How to fix?

I only want the two output outlined in the function with the corresponding titles

but this produces only one answer 'ans':

function [ampres,amplevels] = ADconverterAmps(bits,rangeVolts)
ampres = (rangeVolts)/(2^(bits));
amplevels = [2^(bits)];
end

While this produces three including a redundant value for ans which is the first output anyway

function [ampres,amplevels] = ADconverterAmps(bits,rangeVolts)
ampres = (rangeVolts)/(2^(bits))
amplevels = [2^(bits)]
end

Answer 1

[Star Strider]

Use a semicolon (;) at the end of each line to suppress the output to your Command Window:

function [ampres,amplevels] = ADconverterAmps(bits,rangeVolts)
ampres = (rangeVolts)/(2^(bits));
amplevels = [2^(bits)];
end

When you call the functions, put a semicolon at the end of the function call line to suppress the function output displaying to the Command Window:

[ampres,amplevels] = ADconverterAmps(bits,rangeVolts);

That should work.

See the documentation on Special Characters [ ] ( ) {} = ' . ... , ; : % ! @ (link) for details on it and others.

[Becky CNS]

This suppresses all output... What I ended up doing was deleting the semi-colons at the end of the function components so they displayed and adding a semi-colon when calling in the command window re the second part of your suggestion. It only displays them in the command window not in the workspace though

[Stephen23]

"It only displays them in the command window not in the workspace though"

Displaying values in the command window is a totally different thing to those values being in the workspace. The workspace is where variables are stored and accessed from. If you do not allocate those outputs to any variables then the outputs of your function will not exist in the workspace.

In general displaying everything in the command window is not very useful.

[Star Strider]

@Becky CNS — Stephen’s explanation is correct. Functions have their own workspaces, so unless you assign the function outputs to specific variables in your main workspace, the first output will be assigned ‘ans’ and none of the others will be returned to your main workspace. None of the variables assigned within your function and not assigned as function outputs will ever appear in your main workspace.

@Stephen — Thank you.

[Becky CNS]

Ah I didn't realise you have to specify the output variables when writing the command to store in the workspace.

So yes, no semi-colons within the function script but then a semi-colon following the command did the job

[Star Strider]

The documentation on Base and Function Workspaces (link) will help explain the relationship between them.