Testing a created function

I am trying to write and test a function to determine whether a person is old enough to drink or not (with the legal age being 19).

For some reason when I test the function the code will run but not display the message that I set. How can I fix this code so that it will display the proper message?

FUNCTION:

function[ans] = drink(age)

if(age<19)

ans = 'no';

else

ans = 'yes';

end

TESTING:

clear

clc

addpath('Library')

age = input('Enter your age: ' );

ans = drink(age);

if(ans == strcmpi(ans, 'yes'))

disp('Old enough to drink')

elseif(ans == strcmpi(ans, 'no'))

disp('Not old enough to drink')

end

[Adam]

Don't call variables 'ans', for starters. Also, this 'logic' is really confusing:

if(ans == strcmpi(ans, 'yes'))
    ...
end

Just

if( strcmp( result, 'yes' ) )

should work fine. It seems a bit odd though that you put logic in your function to return 'yes' or 'no', then more logic that effectively checks the same thing to the convert to a different string!

Answer 1

[Star Strider]

First, it is best not to use ‘ans’ as a variable, since it is the default variable and can be overwritten.

Second, the the if and elseif conditions were not coded correctly.

This works:

if strcmpi(rsp, 'yes')
    disp('Old enough to drink')
elseif strcmpi(rsp, 'no')
    disp('Not old enough to drink')
end

[Alicia Sood]

Noted, thank you!

[Star Strider]

As always, my pleasure!