Help with For/If commands

I am working on a project right now, and have a menu asking what a user would like to solve for. The menu corresponds to function handles, and in the function handles the variables can be used in more than 1. What i want to do is to have it run for variable A or B or C, and if it doesn;t have A B or C in it, it will stop and move to D E and F.

Here is what some of the code looks like :

(choice is the variable i assigned for the menu)

if choice == 1,4;6;7;8;10;11;

      a=input ('What is the cross sectional area?     ');

else

end

if choice ==2,3;5;6;

      cl=input('What is the change in length?     ');
  else
  end

Answer 1

[Junaid]

Use switches .. I hope it will solve your problem.

ex.

switch choice
  case {1,4,6,7,8,10,11}
    % your code here
  case {2,3,5,6}
  % your code here
end

[Jevin]

That seems to work at first, but later on i have something along the lines of :

if choice == 2||3||4||5||6||7;

l=input('What is the length of your object? ');

end

if choice == 8||9||11;

cp=input('How many points of contact does your object have? ');

end

if choice == 3||4||6||7;

em=input('What is the elastic modulus of your material? ');

so it needs to work for more than one, since i am asking the components of formulas, and 5 of the formulas share 1 variable etc.

Answer 2

[Walter Roberson]

switch choice
  case {2, 3, 4, 5, 6, 7}
    %your code here
end
switch choice
  case {8, 9, 11}
    %your code here
end

If you prefer to use "if":

if ismember(choice, [1 4 6 7 8 10 11])
  %your code here
end
if ismember(choice, [8, 9, 11])
  %your code here
end