How I could insert an accented word in a new command?

Question

I have the following command

\newcommand{\startsection}[4]{
\gdef\classname{#2}
\subsection*{\label{#3}{\bf {\sc #1} #2}}{
\rule[1em]{\hsize}{4pt}\vskip -1em
\vskip .1in 
#4
}%
}

I use it in the following way

\startsection{Anotaci\'on}{Lazy}{l0}

But my results is the following

Anotaci n Lazy

and my desired outpur would be something like this

Anotación Lazy

How I could solve it?

Thanks

Answer 1

Check this:

\documentclass{book}
\usepackage{mathpazo}
\makeatletter
\newcommand{\startsection}[4]{
\gdef\classname{#2}
\subsection*{\label{#3} \textbf{\textsc{#1} #2}}{
\rule[1em]{\hsize}{4pt}\vskip -1em \vskip .1in #4
}%
}
\makeatother

\begin{document}

\startsection{Anotaci\'on}{Lazy}{l0}

\end{document}

Answer 2

Also pay attention for trailing spaces:

\documentclass{book}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{libertine}
\newcommand\startsection[4]{%
  \gdef\classname{#2}%
  \subsection*{\label{#3}\textbf{\textsc{#1} #2}}{%
  \rule[1em]{\hsize}{4pt}\vskip -1em \vskip .1in #4}}

\begin{document}
\startsection{Anotación}{Lazy}{l0}

\end{document}