prompt for variables in an equation

Hello,

I am new here and to Matlab so here is my question. How do I promp a user for variables in an equation and after the answer is given to loop back again in order to enter new variable?

example:

promp for r

promp for h

r^2*acos((r-h)/r)-(r-h) * sqrt(2*r*h-h^2)

answer =

Loop

Answer 1

[Walter Roberson]

while true

    r = input('How about sending an r value over this way?');

    h = input('Groovy. Got a spare h value too?');

    r^2*acos((r-h)/r)-(r-h) * sqrt(2*r*h-h^2)

end

[Ken]

Hi Walter,

That did it! Thank you.

Sorry about the email.

[Daniel Bramhall]

How do you break the loop when you get an answer?

[Walter Roberson]

while true
    r = input('How about sending an r value over this way?');
    if isscalar(r) && isnumeric(r); break; end
end
while true
    h = input('Groovy. Got a spare h value too?');
    if isscalar(h) && isnumeric(h); break; end
end

disp( r^2*acos((r-h)/r)-(r-h) * sqrt(2*r*h-h^2) )

Answer 2

[Panagiotis Panos Katranitsas]

Hi Ken,

i think the instruction input is what you need.

ex.

    reply = input('Do you want more? Y/N [Y]: ', 's');
    if isempty(reply)
        reply = 'Y';
    end

[Ken]

Thank you for your reply.

Where do I put the instruction input?

[Walter Roberson]

At the point you have written "promp for r" and "promp for h"

[Walter Roberson]

Please do not send clarifying questions in email: post them as comments.