我不知道为什么我的程序不能正常运行，错误信息如下：
paragraph ended before \pgffor@next was complete
每个想法都有帮助，谢谢！！！
这是代码：
% Pie chart with colors
% Author: Henri Menke
\documentclass[tikz,border=10pt]{standalone}
\begin{document}
\def\angle{0}
\def\radius{4.8}
\def\cyclelist{{"orange","blue","red","green","magenta","yellow","cyan","purple",}}
\newcount\cyclecount \cyclecount=-1
\newcount\ind \ind=-1
\begin{tikzpicture}
[nodes = {font=\sffamily}]
\foreach \percent/\name in {
12.5/Segmento1,
12.5/Segmento2,
12.5/Segmento3,
12.5/Segmento4,
12.5/Segmento5,
12.5/Segmento6,
12.5/Segmento7,
12.5/Segmento8
}
\foreach \percentSIS in {
9.57,
8.54,
7.81,
4.62,
5.58,
3.49,
8.36,
7.53
}
{
\ifx\percent\empty\else % If \percent is empty, do nothing
\global\advance\cyclecount by 1 % Advance cyclecount
\global\advance\ind by 1 % Advance list index
\ifnum7<\cyclecount % If cyclecount is larger than list
\global\cyclecount=0 % reset cyclecount and
\global\ind=0 % reset list index
\fi
\pgfmathparse{\cyclelist[\the\ind]} % Get color from cycle list
\edef\color{\pgfmathresult} % and store as \color
% Draw angle and set labels
\draw[fill={\color!50},draw={\color}] (0,0) -- (\angle:\radius)
arc (\angle:\angle+\percent*3.6:\radius) -- cycle;
\node at (\angle+0.5*\percent*3.6:0.85*\radius) {\percent\,\%};
\node at (\angle+0.5*\percent*3.6:0.55*\radius) {\percentSIS\,\%};
\node[pin=\angle+0.5*\percent*3.6:\name]
at (\angle+0.5*\percent*3.6:\radius) {};
\pgfmathparse{\angle+\percent*3.6} % Advance angle
\xdef\angle{\pgfmathresult} % and store in \angle
\fi
};
\node[align=center,text width=3cm]{WWS};
\draw[gray] (0,0) circle (3.5cm) circle (2cm);
\end{tikzpicture}
\end{document}
答案1
据报道，错误消息位于第 34 行，该行是空白行（段落末尾），删除空白行即可消除错误。