string as input for function

this function handles a string as input:

function rev=stringrev(a)

n=length(a);

for i=1:n

      b(i)=a(n-i+1);

end

rev=b;

but this does not:

function palindrom=checkpalin(a)

rev=stringrev(a);

      if strcmp(rev,a)

         palindrom=sprintf('%s is a palindrom', rev)

      else

          palindrom=sprintf('%s is not a palindrom', rev)

      end

what is the difference?

This is what happens when I run them in matlab:

>> b='astsa'

b =

astsa

>> checkpalin(b)
??? Undefined function or method 'checkpalin' for input arguments of type 'char'.

>> a='iceice'

a =

iceice

>> stringrev(a)

ans =

ecieci

>>

Answer 1

[Grzegorz Knor]

Are you sure that you have not done a typo in the filename? I've tested your functions, and they work.