How can I ask the user to input units of either m or in, then have the program keep asking them for units until they input either m or in?

Asks the user the unit of l. The program must accept the following units or keep asking for a unit: a. m b. in

[bidyut mandi]

Ask the user the unit of I means disp('Enter the unit of I').I don't get that the program everytime ask the unit of a.m,b.in or single time.Please clarify this

Answer 1

[Walter Roberson]

I suggest you use

 iChoice = menu('Select a unit', 'inches', 'metres');

This will return 1 for inches and 2 for metres.

[Tanner Larkey]

Thanks! Using the menu makes things a lot easier! Here is what I came up with:

units = menu('Select a unit','inches','meters');

if units == 1
  g = 384;
  fprintf('Gravity is 384 in/s^2')
else
  g = 9.81;
  fprintf('Gravity is 9.81 m/s^2')
end

Answer 2

[ES]

    disp('Choose the Unit.');
    disp('[0] Inches.');
    disp('[1] Metres.');

    iChoice=input('Please make a choice.  ');
    while(~isnumeric(iChoice) ||(uint8(iChoice)>1))
        iChoice=input('Please make a valid choice. Enter 0 to quit. ');
    end

[Tanner Larkey]

Then how would I write a script that correctly determines the value of gravitational acceleration g, consistent with the units they input and print it on screen? (if they input meters gravity would be 9.81 m/s^2, if they input inches gravity would be 384 in/s^2)

[Walter Roberson]

if iChoice == 0
   g = 384;
else
   g = 9.81;
end