Label in table environment not appearing

I tried to change the position of the label, nevertheless it didn’t work.
Here follows the code:

noindent
blahblah ref{tab:1}
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begin{table}[ht]
    centering
    begin{tabular}{ c|c } 
     hline
     A & 0  hline
     B & 1    hline
     C & 2    hline
     D & 3   hline
     E & 4    hline
     F & 5 
     hline
    end{tabular}
    caption{blahblah} 
    label{tab:1}
end{table}
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