Unwanted "ans" in my output

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Xuande Zhang
Xuande Zhang 2018-10-19
评论： Ashfaque Ahmed 2018-10-23
Hi all,
I know a lot of people already asked this, but still i cannot have the correct output.
In my function,
function [area, cr] = circle(r);
area = pi * r^2
cr = pi * 2 * r
end
Still the first output (area) will be populated after I added semi-colon at end of first line.
Thanks for your help in advance.
  2 个评论
Ashfaque Ahmed
Ashfaque Ahmed 2018-10-23
Dear Sir, This is working but only one value is showing i.e. area.

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采纳的回答

madhan ravi
madhan ravi 2018-10-19
编辑：madhan ravi 2018-10-19
[area,cr]=circle(2) % calling of function with two outputs , here r is 2
function [area, cr] = circle(r);
area = pi * r^2; %semicolon here
cr = pi * 2 * r; %semicolon here
end
  4 个评论
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madhan ravi
madhan ravi 2018-10-22
编辑：madhan ravi 2018-10-22
>>area =
12.5664
cr =
12.5664
>>
madhan ravi
madhan ravi 2018-10-22
this is my output in my command window

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更多回答（1 个）

Guillaume
Guillaume 2018-10-19
This is what you see when you write your code in matlab's editor
Can't you see the editor highlights that point out the issues with your code? If you hover over them, the editor even tells you how to fix them and offer to fix it for you. Why do you ignore it?
As the editor tells you, no semi-colon on the first line, but semi-colons on the 2nd and 3rd, so
function [area, cr] = circle(r)
area = pi * r^2;
cr = pi * 2 * r;
end
  3 个评论
显示 1更早的评论
Guillaume
Guillaume 2018-10-22
First, follow the instruction given above and do the fixes that the editor tells you to do. Your function code should be
function [area, cr] = circle(r)
area = pi * r^2;
cr = pi * 2 * r;
end
Once you've done that, when you call your function, you'll notice that you no longer get the area and cr output (!) but still get your unwanted ans
That particular problem is because you need to learn how to call functions. As documented ans gets created when you call a function without assigning its result to a variable. The proper way to call your function is:
[area, perimeter] = circle(somevalue)
and no more ans !
Xuande Zhang
Xuande Zhang 2018-10-22
Thanks for your help! It worked.

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