multiple function outputs
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hi i am working through an online tutorial and having trouble with the following function,
function [summ,prodd] = sumprod(x1,x2)
% usage:
% [summ, prodd] = sumprod(x1,x2)
% x1 = a complex number
% x2 = another complex number
% summ = sum of x1 and x2
% prodd = product pf x1 and x2
prodd = (x1)*(x2);
summ = x1 + x2;
I want it to output the two variables but it only gives me the sum. thanks,
David
4 个评论
Abinash Mandal
2019-6-14
Suppose we only want second output (product in this case), then how to do that??
Stephen23
2019-6-15
编辑:Stephen23
2019-6-15
@Abinash Mandal: by reading this comment below, from three years ago, and the comment that follows it:
Or by using your favorite internet search engine to search for "MATLAB ignore function outputs" and reading the first link that is returned:
采纳的回答
Fangjun Jiang
2011-8-20
call it this way: [s,p]=sumprod(x1,x2)
2 个评论
Kannapiran Arasu
2016-9-8
For this I always gt the first value namely s. If I want only p how to go about it?
Fangjun Jiang
2016-9-8
You can do this. [~,p]=sumprod(x1,x2). Please note that earlier version of MATLAB does not support this "~" syntax.
更多回答(2 个)
amatlabr
2018-3-22
编辑:amatlabr
2018-3-22
I know is an answered question, but I wrote two simple functions in different m-file under same folder :
function [ somma,prodotto ] = sommaprodotto( a,b )
somma = a +b;
prodotto = a*b;
end
and a main() calling the above function :
function [s,p]=main( )
val1 = 39;
val2 = 21;
[s,p]= sommaprodotto(val1,val2);
end
I click on run button but I only get the first value, why? I also noticed if I write calling function without semicolon ( [s,p]= sommaprodotto(val1,val2) ) I get both values in the command window, but not in the working space, why? Thanks
1 个评论
Stephen23
2018-3-22
编辑:Stephen23
2018-3-22
"I click on run command but I only get the first value"
Because you click on the "Run" button. Do NOT use that button. That button is the worst design decision in the history of MATLAB, because no beginner knows what it really does. Ignore that button.
To run any code simply type it in the command window (or another script/function/...) together with any required input and output arguments and then press enter. For example:
>> [S_out,P_out] = main()
and then press enter. You will get both outputs.
"I also noticed if I write calling function without semicolon ... I get both values in the command window, but not in the working space"
Which workspace? Where are you calling this function? How are you checking if the variables are in that workspace? Try writing whos straight after when you call that function: are those variables listed?
Adithya Papa
2020-2-2
function [summ,prodd] = sumprod(x1,x2)
prodd = (x1)*(x2)
summ = x1 + x2;
1 个评论
Adithya Papa
2020-2-2
Now it will give 2 outputs.The semicolon after the prodd suppresses the output.That's why it is not showing
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