Need help with conversion program

Need help creating a program that is capable of converting from cm or in or ft into units of cm or in or ft. If incorrect units are input by the program user print an appropriate message and do not perform conversion.

ex] Command window should prompt 3 times:

Enter the Input Distance: 1

Enter the input Units(cm,in,ft): ft

Enter output units to convert to(cm,in,ft): in

1 ft = 12 in

ex]

Enter the Input Distance: 1

Enter the input Units(cm,in,ft): x

Incorrect input units

Thanks

[Thomas]

what have you done so far? and where are you getting stuck?

[Joseph]

in=1
cm=2.54*in
ft=12*in
Distance=input('Enter a Distance:');
Units=input('Enter Units Of Distance(cm,ft,in):');
Output=input('Enter Output Units to Convert to(cm,in,ft):');

if (Units='in' & Output='cm')
    Out=Distance*cm
end
   fprintf('\n\nConversion=%g\n',Out)

Answer 1

[Anuj]

There can be many solutions for this, smaller one also, but for a beginner level, this will sure work for you.

d= input('Enter the Input Distance: ');
  i= input('Enter the input Units(cm,in,ft): ');
  o= input('Enter output units to convert to(cm,in,ft): ');
  switch i
      case 'cm'
          if o=='in'
              x=d/2.54;
          else
              if o=='ft'
                  x=d/30.48;
              else 
                  if o=='cm'
                      x=d;
                  end
              end
          end
      case 'in'
          if o=='in'
              x=d;
          else
              if o=='ft'
                  x=d/12;
              else 
                  if o=='cm'
                      x=2.54*d;
                  end
              end
          end

        case 'ft'
            if o=='in'
                x=d*12;
            else
                if o=='ft'
                    x=d;
                else 
                    if o=='cm'
                        x=d*30.48;
                    end
                end
            end
            str = fprintf('%d %s = %d %s',d,i,x,o);
    otherwise
        disp('wrong input');
    end

[nor ain maisarah]

i did not get the answers using these codes, it appears that 'unrecognized cm' when i put cm in i input ?

Answer 2

[Walter Roberson]

Units=input('Enter Units Of Distance(cm,ft,in):', 's');

Also, use strcmp() to compare strings, not "="