How can I obtain my expected result?

I typed this code

function out=picker(c,in1,in2)

if c
    out=fprintf('%d\n'in1);
else 
    out=fprintf('%d\n'in2);
end

my desire was to get this reslut

>>out=picker(true,5,6)
out=5
>>out=picker(false,5,6)
out=6

but matlab found a bug here .What is wrong with my code and how can I obtain my expected result?

Answer 1

[claudio]

It depends on what type of outcome you need. If you need numeric out

function out = picker(c,in1,in2)
out = in2;
if c, out = in1; end

If you need char outcame

function out = picker(c,in1,in2)
out = sprintf('out = %d',in2)
if c, sprintf('out = %d',in1); end

[Sabid Hossain]

Thank you for you help.I have tried your code by myself and got my desired result.But when I use 'fprintf' instead of 'sprintf' I've got different result.

out = picker(true,4,5)
out = 5
out =

     7

out = 4
out =

     7

I thought sprintf and fprintf work alike. But when I use fprintf, in result "out = 7" comes out of nowhere. What is the reason behind this?

[claudio]

https://www.mathworks.com/help/matlab/ref/fprintf.html

https://www.mathworks.com/help/matlab/ref/sprintf.html

sprintf allows to format data into string. fprintf (with that syntax) returns the number of characters (as Image Analyst said)

Answer 2

[David Hill]

function out=picker(c,in1,in2)
if c
    out=in1;
else 
    out=in2;
end
fprintf('out=%d',out);

Answer 3

[Image Analyst]

fprintf() returns the number of characters printed, which is not what you want. What you want is this:

function out = picker(c, in1, in2)
v = [in1, in2];
out = v(c+1);