Write an array of data to multiple text file but it shows error

x =rand(10,1);
for i=1:10
    A = x*i;
    textFilename = ['akg_' num2str(i) '.txt'];
    fid=fopen(textFilename,'w');
    fprintf(fid,'%f\n',A(i));
    fclose(fid);
end

I get the error

Error using fprintf
Invalid file identifier. Use fopen to generate a valid file identifier.

error in xyz (line 6)
fprintf(fid,'%f\n',A(i));

[per isakson]

Replace

textFilename = ['akg_' num2str(i) '.txt'];

by

textFilename = fullfile('akg_',[num2str(i),'.txt']);

[AKHILA GOUDA]

thank you sir

[per isakson]

I guess you don't have write permission in the current directory

Write to a different directory

[AKHILA GOUDA]

yes sir exactly this is my mistake .. now it run there is no issue thanks a lot