Accessing/writing a fieldname values for a blind structure

Okay, so lets say you got a function that you want to generically send structures too for writing out. I figured out how to get to the field names and write them out for headers. However, I cannot figure out how to access the actuall values for the structure and they're perspective data type. I am using Matlabe 2010B.

Here is what I got:

function write_datastruct(person) %person = [] %person.name = 'Robbie'; %person.age = 38; %person.height = 58;

%access/write out the fieldnames for a header xfields = fieldnames(person); fieldcnt = length(xfields);

for ii = 1:fieldcnt fprintf('\t%s',xfields{ii}); end

Now how do I access/write the values of person............. ??? This does not work:

for jj = 1:fieldcnt fprintf('\t',person.fields{jj}); end

Answer 1

[Patrik Ek]

You may want something like this,

function printfields(theStruct)

fields = fieldnames(theStruct);
for k = 1:length(fields)
    if isstruct(theStruct.(fields{k}))
        fprintf('%s\n  ',fields{k})
        printfields(theStruct.(fields{k}))
    else
        if k > 1
            fprintf('  ');
        end
        if isa(theStruct.(fields{k}),'char')
            fprintf(':%s\n',theStruct.(fields{k}));
        else
            fprintf(':%g\n',theStruct.(fields{k}));
        end
    end
end

Try it on

 a.b.c = 1;
 a.c.d = 'a';

You may also want it to work for cells so then you must do a,

elseif isa(theStruct.(fields{k}),'cell')
printcell(theStruct.(fields{k}));

where you may need to write/find a function printing cells.

[Rick]

THANK YOU too Patrik for your TIME..... Yes Sir thats it.

Answer 2

[David Sanchez]

person.name = 'xx';
person.age=32;
xfields = fieldnames(person)

>> person.(xfields{1})

ans =

xx

>> person.(xfields{2})

ans =

      32

[Rick]

David, How do I give it a format in a fprintf write statement ??

[Patrik Ek]

This do not work for more than one layer.