Matlab function

I'm relatively new to Matlab

I need to carry out the following task and I'm just partially done.I'd be happy if someone can help me as stated;

Task I'm doing is;

1) I have 2 functions A and B 2)Function A does some calculations. 3)After doing those calculations function A calls B- no arguments given to B 4)At this point Function B should prompt the user for some inputs 5)The user should enter the inputs through the coommand window 6)The user inputs are returned from function B to function A

Can anyone please advice how to carry out steps 4,5,6? Please help.

shalini

[Andrew Newell]

See http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer.

[Shalini]

Sorry, but I was just trying to ask how to prompt the user for input values in step 4. I did see the video for matlab programming but couldn't get this..anyways, will ebgrateful if helped

Answer 1

[Image Analyst]

There is a function called input(). Try that.

From its help:

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

[Shalini]

So, if I put it as:

reply=input('Enter the value of A','s');

Then reply will be returned as 'Y'

Where and when will the user eneter the value of A in command window?

[Image Analyst]

You said A was a function, so you have to define it in an m-file, something like this:

function [output1 output2] = A(input1, input2)

output1 = 2*input1;

output2 = input2 / 10;

The user does not enter A - the programmer (you) does.

[Shalini]

Sorry for the confusion:

I want a variable to be eneterd in the command window and I want the function B to prompt this to the user like:

reply=input('Enter the value of variable my_variable','s');

USer eneters in command window (supossing a number 6)

then 6 should get assigned to my_variable..

[Image Analyst]

Try this:

% Define a

a = 10

% Ask user for a number, b

b = input('Enter the value of variable "b" ')

% Multiply the two.

c = a * b

[Shalini]

Thanks a lot, will try in next 4 hours (I do not have Matlab where I'm working now).

Can the user input a vector as well?

I would guess yes, right?

[Image Analyst]

Stangely, no. You have to do it like this:

% Ask user for several numbers, b

string_b = input('Enter the several numbers ', 's')

double_b = str2num(string_b)

% Multiply the two.

c = a * double_b