Name "Chapter" is not showed in the table of the content

Question

In my LaTeX code I add the line

\tableofcontents

And begging of each chapter i have these lines.

\renewcommand{\vspace}[2]{}\chapter{ }
{\huge\bf Introduction}
\addcontentsline{toc}{chapter}{Introduction}

When i compile my code it shows

1                                                                                 5
    Introduction                                                                  5
        1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    5
2                                                                                 6
    Computing                                                                     6
        2.1 Computing type . . . . .... . . . . . . . . . . . . . . . . . . . . . 6

Like this,

But I want to get the "Chapter" name to in front of the number like this.

Chapter 1 
    Introduction 
        1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Chapter 2 
    Computing 
        2.1 Computing type . .  . . . . . . . . . . . . . . . . . . . . 6

How can I do that?

use the tocloft package (or the memoir class) it has featues to add such names — daleif, Sep 14 '12 at 12:05
Thanks all i got it by adding \renewcommand\cftchappresnum{\large \chaptername~} — Team, Sep 14 '12 at 12:34
Hmm, seems I'm mistaken, tocloft does not provide the naming prefix that memoir provide — daleif, Sep 14 '12 at 13:10
99.9% related: Adding the word “Chap” before the chapters numbers in the ToC — Werner, Sep 15 '12 at 05:25

score 3 · Answer 1 · answered Sep 14 '12 at 13:24

You can use the tocloft package to do this: a redefinition of \cftchappresnum allows to add \chaptername before the sectional unit number (this requires increasing the length \cftchapnumwidth). Redefining \cftchapaftersnumb you can add a line break after the sectional number and some negative horizontal spacing to achieve the desired alignment. A little example:

\documentclass{book}
\usepackage{tocloft}

\newlength\mylen
\renewcommand\cftchappresnum{\chaptername~}
\settowidth\mylen{\bfseries\cftchappresnum\cftchapaftersnum}
\renewcommand\cftchapaftersnumb{\\*\hspace*{-\mylen}}
\addtolength\cftchapnumwidth{\mylen}

\begin{document}

\tableofcontents
\chapter{Introduction}
\section{Overview}
\chapter{Computing}
\section{Computing type}

\end{document}

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As egreg points out in his comment, it is not a good idea to redefine \vspace. If you want to redefine the formatting for the sectional units and you are using a standard document class, you can use the titlesec package.

Name "Chapter" is not showed in the table of the content

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