Matrix dimensions must agree error in if loop

Why do I get a matrix dimensions error here?

I'm alson not sure about the num2str parts in the disp. Do I even have to convert day to a string because it is a string right?

day = input('What day is today?', 's');
if day == 'Saturday' | day == 'Sunday'
    disp(['Its ' num2str(day) ' ! Its weekend!'])
else 
    disp(['Its ' num2str(day) ' ! Get to work!'])
end 



>> whichDay
What day is today? sunday 
Matrix dimensions must agree.

Error in whichDay (line 2)
if day == 'Saturday' | day == 'Sunday'

Answer 1

[Andrei Bobrov]

day = input('What day is today? -> ', 's');

lo = any(strcmpi(day,{'saturday','sunday'}));

if lo
    disp(['Its ' day ' ! Its weekend!'])
else 
    disp(['Its ' day ' ! Get to work!'])
end

Illustration to the error you received:

day = input('What day is today? -> ', 's');
What day is today? -> Sunday
>> day == 'Saturday' | day == 'Sunday'
Matrix dimensions must agree. 
>> day == 'Saturday'
Matrix dimensions must agree. 
>> day == 'Sunday'
ans =
  1×6 logical array
   1   1   1   1   1   1
>> 

[Ellen De Jonghe]

Thanks!

Do you also know why i get the error?