\documentclass{article}
\usepackage{array}
\begin{document}
\begin{tabular}{| >{\centering}p{2.5cm} | >{\centering}p{0.5cm} | >{\centering}p{2.5cm} |>{\centering}p{2.5cm} |>{\centering}p{2.5cm} |>{\centering}p{2.5cm} |}
\hline
Abc & Bcd & A long cell with text that wraps around and is centered & long cell with text & AAAlong cell with text that wraps around and is centered & SSSlong cell with text that wraps around and is centered \\
1 & 3 & qw & qe & sad &11\\
\hline
\end{tabular}
\end{document}
\centering changes the definition of \\ which breaks inside tabluars and arrays. You need to add \arraybackslash afterwards to correct this. You also should define a new column type if you need this more often:
\documentclass{article}
\usepackage{array}
\newcolumntype{C}[1]{>{\centering\arraybackslash}p{#1}}
\begin{document}
\begin{tabular}{| C{2.5cm} | C{0.5cm} | C{2.5cm} |C{2.5cm} |C{2.5cm} |C{2.5cm} |}
\hline
Abc & Bcd & A long cell with text that wraps around and is centered & long cell with text & AAAlong cell with text that wraps around and is centered & SSSlong cell with text that wraps around and is centered \\
1 & 3 & qw & qe & sad &11\\
\hline
\end{tabular}
\end{document}
See the related answer to Center column with specifying width in table (tabular enviroment)? for advanced declarations which support line-breaks and hyphenation of the first word.
answered May 23 '11 at 16:33
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1For narrow columns (such as the second one in the example code) it would be a good idea to add
\hspace{0pt}to the column definition, to allow hyphenation of the first word. May 23 '11 at 16:42 -
Dear Martin. When I ran it, one error appeared: úndefined control sequence'for command ''newcolumntype''– StrongMay 23 '11 at 20:52
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@Strong: It works for me.
\newcolumntypeis defined by thearraypackage. May 23 '11 at 20:58
\centeringinside table column definition results in error message")?\\.