I have a function that calculates 
when you input values for n, for x, for y. Now I need to ask the user for input. I prefer how inputdlg asks for input so I wrote the following (where seriessum is my function, written in another .m file): a=inputdlg({'Enter a value for n', 'Enter a value for x', 'Enter a value for y'}, 'ΣS=(x/y).^i, for i=1:n')
a1=zeros(1,3);
for k=1:3
a1(k)= str2double(cell2mat(a(k)));
end
seriessum(a1(1),a1(2),a1(3))
This works for most inputs, however, I realised it doesn't work for inputs like 'pi/4' or similar.
That's when I decided that I would use a regulat input function and wrote:
promptn = 'Enter an integer value for n';
promptx = 'enter a value for x';
prompty= 'Enter a value for y';
n = input(promptn)
x = input(promptx)
y = input(prompty)
seriessum(n, x, y)
But in this case, the prompts keep appearing in the workspace (I mean: I enter a value for n, for x and for y, and I'm immediately asked to enter a value for n again).
I would like to know if I can fix any of this issues. The second issue is more of an inconvenience because it does calculate the sum anyways.
