I try many changes in this code, but I don't see the error. Can someone help me?
\documentclass[10pt]{article}
\usepackage{pgf,tikz}
\usetikzlibrary{arrows}
\pagestyle{empty}
\begin{document}
\definecolor{ffffqq}{rgb}{1,1,0}
\definecolor{qqccqq}{rgb}{0,0.8,0}
\definecolor{ffttzz}{rgb}{1,0.2,0.6}
\definecolor{ttttff}{rgb}{0.2,0.2,1}
\begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1.0cm,y=1.0cm]
\draw[->,color=black] (-1.11,0) -- (1.09,0);
\foreach \x in {-1,-0.8,-0.6,-0.4,-0.2,0.2,0.4,0.6,0.8,1}
\draw[shift={(\x,0)},color=black] (0pt,2pt) -- (0pt,-2pt) node[below] {\footnotesize $\x$};
\draw[->,color=black] (0,-0.03) -- (0,1.14);
\foreach \y in {,0.2,0.4,0.6,0.8,1}
\draw[shift={(0,\y)},color=black] (2pt,0pt) -- (-2pt,0pt) node[left] {\footnotesize $\y$};
\draw[color=black] (0pt,-10pt) node[right] {\footnotesize $0$};
\clip(-1.11,-0.03) rectangle (1.09,1.14);
\draw[color=ttttff, smooth,samples=100,domain=-1.0:1.0] plot(\x,{1-abs((\x))+0.1*2.718281828^((-1)/0.1)*(1-2.718281828^((1-abs((\x)))/0.1))});
\draw (0.62,0.98) node[anchor=north west] {$$\varepsilon= 1/10$$};
\draw[color=ffttzz, smooth,samples=100,domain=-1.0:1.0] plot(\x,{1-abs((\x))+0*(1-2.718281828^((1-abs((\x)))/0.05))});
\draw [line width=1.2pt,color=ffttzz] (0.57,0.86)-- (0.46,0.86);
\draw (0.62,0.91) node[anchor=north west] {$$\varepsilon= 1/20$$};
\draw[color=qqccqq, smooth,samples=100,domain=-1.0:1.0] plot(\x,{1-abs((\x))+0*(1-2.718281828^((1-abs((\x)))/0.03))});
\draw [line width=1.2pt,color=qqccqq] (0.58,0.72)-- (0.47,0.72);
\draw (0.62,0.78) node[anchor=north west] {$$\varepsilon= 1/40$$};
\draw[color=ffffqq, smooth,samples=100,domain=-1.0:1.0] plot(\x,{1-abs((\x))+0*(1-2.718281828^((1-abs((\x)))/0.04))});
\draw [line width=1.2pt,color=ffffqq] (0.57,0.78)-- (0.47,0.78);
\draw (0.62,0.85) node[anchor=north west] {$$\varepsilon= 1/25$$};
\draw (-1,0)-- (0,1);
\draw (1,0)-- (0,1);
\draw [line width=1.2pt,color=ttttff] (0.44,0.97)-- (0.45,0.67);
\draw [line width=1.2pt,color=ttttff] (0.45,0.67)-- (0.84,0.66);
\draw [line width=1.2pt,color=ttttff] (0.84,0.66)-- (0.84,0.97);
\draw [line width=1.2pt,color=ttttff] (0.84,0.97)-- (0.44,0.97);
\draw [line width=1.2pt,color=ttttff] (0.57,0.92)-- (0.46,0.92);
\end{tikzpicture}
\end{document}