How to have a changing variable within a user input?

I have the user input a number from 1-100. Here is the segment of my file that I'm working with.

Num = input('How many circles? ');
disp('Now enter the diameter of each circle one at a time when prompted')
for i=1:Num
   D(:,i)= input('Diameter of circle ___ in mm:   ')
end

I want the user to see "Diameter of circle 1 in mm? then "Diameter of circle 2 in mm? then "Diameter of circle 3 in mm? and so on until they have input the diameters for all of the circles.

I have tried to use num2str(i) but I haven't been able to get that to work. Later on I use num2str(i) within a disp text and that works fine. Any thoughts?

Answer 1

[Andrei Bobrov]

Num = input('How many circles? ');
disp('Now enter the diameter of each circle one at a time when prompted')
D = zeros(Num,1);
for i=1:Num
   D(i)= input(['Diameter of circle ',num2str(i),' in mm:   ']);
end

Answer 2

[Daniel Shub]

Not sure how you tried to use num2str, but

 D(:,i)= input(['Diameter of circle ', num2str(i), ' in mm:   '])

works for me

[Matt]

I thought I tried using it that way. I even copied and pasted it from how I formated it within my disp text and it still didn't work. Guess I was just messing up somehow.

Thanks