My program doesn't write data to file

I don't know why this program doesn't work. I think is good, but I don't know.

clc, clear;
plik = fopen('dane.txt','w');
x = -5:1:5;
y = -5:1:5;
z = sin(x).*exp(y.*y);
fprintf(plik,'\tx\ty\tz\n%6.3f\t%6.3f\t%6.3f\n', [x;y;z]);
fclose(plik);

Answer 1

[Cris LaPierre]

Works for me. What do you mean by "this program doesn't work"? Do you mean it's not creating the file, or the file contents are not what you wanted?