Lite Latex study notes

1. The basic template of Latex

• The format of the code is as follows

\documentclass{ctexart}
\title{标题}
\author{作者}
\data{\today}%日期
\begin{document}
\maketitle%生成标题作者等信息
正文
\end{document}

2. Multi-level title and table of contents

• For level 1 titles \section{标题名字}, latex will automatically generate a serial number 1, 2, 3...
• For level 2 headings subsection{标题名字}, used below level 1 headings, latex will automatically assign 1.1, 1.2, ...
• Just \maketitleadd a sentence after the directory\tableofcontents

3. Insert picture

• first import the package\usepackage{graphicx}

• Enter the following code where the image needs to be imported

    1. 第一种方式
    \begin{figure}[htbp]
    	\centering
    	\includegraphics[width=8cm]{图片.jpg}%图片需要和tex放在同一目录下
    	\caption{名字}
    \end{figure}
    
    2. 第二种方法
    \begin{center}
    	\includegraphics[width = .88\textwidth]{tu1.jpg}
    	图1\quad 名字    %\quad是一个大空格，更长的有\qquad
    \end{center}
  

• Solution to image drift

\usepackage{float}
\usepackage{graphicx}
		\begin{figure}[H]
        	\centering
    		\includegraphics[width=8cm]{图片.jpg}%图片需要和tex放在同一目录下
    		\caption{名字}
		\end{figure}

4. Mathematical formulas

website

5. A collection of common commands

• \textbf{}
  bold font
• \Large \Huge \tiny
  change font size
• ~\[16pt]
  Insert a blank line and specify the size of the blank line
• \noindent
  cancels the indentation of the first line of the paragraph
• \mbox{}
  add text to math formula
• linespread{1.5}
  1.5 times the line spacing
• \songti
  Chinese uses Song style. This is basically useless, because ctexart Chinese defaults to Song, and bold defaults to Hei. Therefore, when writing a Chinese paper, you don’t need to adjust the font, you only need to pay attention to the font size.

6. Enumeration

• no number

\begin{itemize}
  \item Huawei
  \item Xiaomi
  \item Oppo
\end{itemize}

• have numbers

\begin{enumerate}
  \item Huawei
  \item Xiaomi
  \item Oppo
\end{enumerate}

7. Insert code

• Insert C/C++ code

\documentclass{ctexart}
\usepackage{listings}
\lstset{language=C}%这条命令可以让LaTeX排版时将C键字突出显示

\lstset{breaklines}%这条命令可以让LaTeX自动将长的代码行换行排版

\lstset{extendedchars=false}%这一条命令可以解决代码跨页时，章节标题，页眉等汉字不显示的问题

\lstset{ showspaces=false,showstringspaces=false,showtabs=false,stepnumber=2}
\begin{document}
	\begin{lstlisting}
	#include <stdio.h>
	int main(){
		printf("hello world");
		return 0;
	}
	\end{lstlisting}
\end{document}

• Insert all types of codes (recommended to use this)

\usepackage{color}
\usepackage{listings}
\lstset{ %
language=C++,                % choose the language of the code
basicstyle=\footnotesize,       % the size of the fonts that are used for the code
numbers=left,                   % where to put the line-numbers
numberstyle=\footnotesize,      % the size of the fonts that are used for the line-numbers
stepnumber=1,                   % the step between two line-numbers. If it is 1 each line will be numbered
numbersep=5pt,                  % how far the line-numbers are from the code
backgroundcolor=\color{white},  % choose the background color. You must add \usepackage{color}
showspaces=false,               % show spaces adding particular underscores
showstringspaces=false,         % underline spaces within strings
showtabs=false,                 % show tabs within strings adding particular underscores
frame=single,           % adds a frame around the code
tabsize=2,          % sets default tabsize to 2 spaces
captionpos=b,           % sets the caption-position to bottom
breaklines=true,        % sets automatic line breaking
breakatwhitespace=false,    % sets if automatic breaks should only happen at whitespace
escapeinside={\%*}{*)}          % if you want to add a comment within your code
}

\begin{lstlisting}
!!code!!
\end{lstlisting}

• insert python code

\documentclass[11pt]{article}  
\usepackage{pythonhighlight}

\begin{document}

The following is some Python code

\begin{python}
# A comment
x = [5, 7, 10]
y = 0

for num in x:
    y += num
    
print(y)
\end{python}

\end{document}

8. Form

simple form

\documentclass{ctextart}
\usepackage{array}
\usepackage{caption}
\usepackage{float}
%这两条是为了保证表格中可以输入数学公式,如果没有这两条的话需要将下方的T和C选项全部换成c(表示居中)
\newcolumntype{C}{>{$}c<{$}}
\newcolumntype{T}{>{$}l<{$}}
\begin{document}
\begin{table}[H]
    \centering
    \caption{求解$4321x+1234y=1$}
    \begin{tabular}{|T|C|C|}%一个|表示一条竖线
        \hline
        r & x&y \\ 
        \hline 
        r_{-1}=4321     & 1 &0 \\ 
        \hline 
        r_{0}=1234      & 0 &1 \\
        \hline
        r_{1}=619       & 1 &-3 \\
        \hline
        r_{2}=615       & -1 &4 \\
        \hline
        r_{3}=4         & 2 &-7 \\
        \hline
        r_{4}=3       & -307 &1075 \\ 
        \hline
        r_{5}=1       & 309 &-1082 \\ 
        \hline
    \end{tabular}
\end{table}
\end{document}

9. References

• Superscript Add a superscript
  \newcommand{\upcite}[1]{\textsuperscript{\textsuperscript{\cite{#1}}}}
  after the quoted content [1]. Note that the label must exist in the\upcite{1}
\bibitem{}
• bibliography

\begin{thebibliography}{99}
    \bibitem{1}陈瑶瑶.新时代背景下筑牢我国粮食安全防线——评《食品安全导论》[J].食品安全质量检测学报,2022,13(19):6449-6450.DOI:10.19812/j.cnki.jfsq11-5956/ts.2022.19.036.
    \bibitem{2}阎新之.谈谈粮食流通的“双轨制”[J].广西商专学报,1989(01):10-12.
    \bibitem{3}王珍. 攥紧中国种子 端稳中国饭碗[N]. 中国纪检监察报,2022-08-15(008).DOI:10.28423/n.cnki.njjjc.2022.003333.
    \bibitem{4}谢璐.中国粮食安全与食品安全[J].食品安全导刊,2017(09):36.DOI:10.16043/j.cnki.cfs.2017.09.022.
    \bibitem{5}姜鹏.疫情前后的粮食浪费[J].北京规划建设,2022(01):184-189.
    \bibitem{6}陈瑶瑶.新时代背景下筑牢我国粮食安全防线——评《食品安全导论》[J].食品安全质量检测学报,2022,13(19):6449-6450.DOI:10.19812/j.cnki.jfsq11-5956/ts.2022.19.036.
\end{thebibliography}

• example code

\documentclass[10pt, a4paper, oneside,scheme=chinese]{ctexart}
%导入包
\usepackage{amsmath, amsthm, amssymb, appendix, bm, graphicx, hyperref, mathrsfs}
\usepackage{cite}
%创建命令
\newcommand{\upcite}[1]{\textsuperscript{\textsuperscript{\cite{#1}}}}

%正文
\begin{document}
这是一个引用1\upcite{1}

这是一个引用2\upcite{2}

% 参考文献
\begin{thebibliography}{99}
    \bibitem{1}引用1
    \bibitem{2}引用2
\end{thebibliography}
\end{document}