MATLAB Programming Fundamentals - MathWorks

uout = 'centimeters';

case 'miles'

fun = @(mi)mi .* 1.6093;

uout = 'kilometers';

case 'pounds'

fun = @(lb)lb .* 0.4536;

uout = 'kilograms';

case 'pints'

fun = @(pt)pt .* 0.4731;

uout = 'litres';

case 'ounces'

fun = @(oz)oz .* 28.35;

uout = 'grams';

end

val = fun(str2num(valin));

valout = [num2str(val) ' ' uout];

end

At the command line, call the convertMe function from regexprep, passing in values for

the quantity to be converted and name of the imperial unit:

regexprep('This highway is 125 miles long', ...

'(\d+\.?\d*)\W(\w+)', '${convertMe($1,$2)}')

ans =

'This highway is 201.1625 kilometers long'

regexprep('This pitcher holds 2.5 pints of water', ...

'(\d+\.?\d*)\W(\w+)', '${convertMe($1,$2)}')

ans =

'This pitcher holds 1.1828 litres of water'

regexprep('This stone weighs about 10 pounds', ...

'(\d+\.?\d*)\W(\w+)', '${convertMe($1,$2)}')

ans =

'This stone weighs about 4.536 kilograms'

As with the (??@ ) operator discussed in an earlier section, the ${ } operator has

access to variables in the currently active workspace. The following regexprep

command uses the array A defined in the base workspace:

2 Program Components