我制作了一个表格，但该表格不适合页面。表格的代码是：
\begin{table}[H]
\centering
\label{my-label}
\begin{tabular}{|l|c|c|c|c|c|}
\hline
& \multicolumn{1}{l|}{} & \multicolumn{1}{l|}{} & \multicolumn{1}{l|}{} & \multicolumn{1}{l|}{} & \multicolumn{1}{l|}{} \\ \hline
& x & 0 & 0 & 0 & 1 \\ \hline
& 1 & x & 0 & 0 & 1 \\ \hline
& 1 & 1 & x & 1 & 1 \\ \hline
& 1 & 1 & 0 & x & 1 \\ \hline
& 0 & 0 & 0 & 0 & x \\ \hline
& 3 & 2 & 0 & 1 & 4 \\ \hline
& 4 & 3 & 1 & 2 & 5 \\ \hline
\end{tabular}
\end{table}
如何更改表格的宽度以使其适合页面？
答案1
您的tabular环境目前不允许在标题单元格中换行，原因有两个。首先，五个数据列的类型为c，不允许换行。其次，标题单元格实际上是使用 列l类型排版的，这也不允许换行。
我建议您（a）摆脱\multicolumn{1}{l}“包装器”，（b）使用tabularx环境而不是环境，以及（c）对五个数据列tabular使用居中版本的列类型。X
我还会删除所有垂直线。这样桌子会立刻看起来更加“开放”和吸引人。
\documentclass{article}
\usepackage[letterpaper,margin=1in]{geometry} % choose page size parameters suitable
\usepackage{float,tabularx}
\newcolumntype{C}{>{\centering\arraybackslash}X} % centered version of "X" column type
\begin{document}
\begin{table}[H]
\setlength\extrarowheight{2pt} % create a more open look
\setlength\tabcolsep{3pt} % default value: 6pt
\caption{Being cool} \label{my-label}
\begin{tabularx}{\textwidth}{@{} l *{5}{C} @{}}
\hline
& Cool as much as possible
& The COP as high as possible
& Have as much input power as possible
& Cool as quick as possible
& System as safe as possible
\\ \hline
Cool as much as possible & x & 0 & 0 & 0 & 1 \\ \hline
The COP as high as possible & 1 & x & 0 & 0 & 1 \\ \hline
Have as much input power as possible & 1 & 1 & x & 1 & 1 \\ \hline
Cool as quick as possible & 1 & 1 & 0 & x & 1 \\ \hline
System as safe as possible & 0 & 0 & 0 & 0 & x \\ \hline
& 3 & 2 & 0 & 1 & 4 \\ \hline
Weight factor & 4 & 3 & 1 & 2 & 5 \\ \hline
\end{tabularx}
\end{table}
\end{document}