Why am I getting this error? "Argument to dynamic structure reference must evaluate to a valid field name."

I'm simply trying to print a string name for a file I'm importing, and I get this error when I use fprintf: "Argument to dynamic structure reference must evaluate to a valid field name." Here's my code:

%% Import the data files
dr = dir('C:\Users\d-r\Box Sync\DATA\MAIN\training\*psv');
data=[];
for k=1:numel(dr)
    data{k,1}.encounter_num = k;
    data{k,1}.labs = importData([dr(k).folder filesep dr(k).name]);
    data{k,1}.vitals = importData([dr(k).folder filesep dr(k).name]);
    fprintf('Importing %s\n',dr.(k).name)
end

Please help, thx!

Answer 1

[Walter Roberson]

In the fprintf you have dr.(k).name when you should have had dr(k).name

[Andre Holder]

Thanks!