[pstricks] texworks and pstricks

[ghostanime2001]

I have installed all the packages for miktex now. I re-ran my code with you
told me and now it says

This is pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9 64-bit)

entering extended mode

(C:\Users\azeem\Desktop\tutorial.tex

! Undefined control sequence.

l.1 \documentclass

{article}

?


What shall I do now ?
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