How do I write not equal to sign (equivalent of != in C) in Latex pseudocode.
[Tex/LaTex] How to write a not equal to sign in Latex pseudocode
pseudocodesyntax
Related Solutions
Since you use the term algorithmic, I assume you're using the algorithms bundle (which provides the algorithmic package and environment). Then the \COMMENT{...} macro typesets a comment in pseudo-code:
\documentclass{article}
\usepackage{algorithmic}% http://ctan.org/pkg/algorithms
\begin{document}
\begin{algorithmic}[1]
\STATE this is code \COMMENT{this is a comment}
\end{algorithmic}
\end{document}
If you're using the (more advanced) algorithmicx package (and use \usepackage{algpseudocode}, which also provides an algorithmic environment), then the \Comment{...} macro typesets a comment in pseudo-code:
\documentclass{article}
\usepackage{algpseudocode}% http://ctan.org/pkg/algorithmicx
\begin{document}
\begin{algorithmic}[1]
\State this is code \Comment{this is a comment}
\end{algorithmic}
\end{document}
In both these environments/packages, you are able to modify the formatting (or typesetting) of the comment. Alternatively, you could create your own \comment{...} macro as well, based on the existing commenting macros.
I'm really not sure whether this is what you're after, but it's a first go:
\documentclass{article}
\usepackage{amsmath,pseudocode}% http://ctan.org/pkg/{amsmath,pseudocode}
\newcommand{\algvar}[1]{\text{\ttfamily\upshape#1}}
\makeatletter
\newcommand{\SWITCH}{\mbox{\bfseries switch }}
\renewcommand{\CASE}{\mbox{ \bfseries case }}
\newcommand{\CASEELSE}{\mbox{ \bfseries else }}
\makeatother
\begin{document}
\begin{pseudocode}{Validate}{\algvar{location1}, \algvar{location2}}
\PROCEDURE{Validate}{\algvar{location1}, \algvar{location2}}
l_1 \GETS 0 \\
l_2 \GETS 0 \\
\algvar{validate} \GETS \TRUE \\
\IF \algvar{board}[\algvar{location1}] \neq 0 \THEN
\BEGIN
l_1 \GETS \algvar{board}[\algvar{location1}] \\
l_2 \GETS \algvar{board}[\algvar{location2}] \\
\IF (l_1 + l_2 \text{ is odd}) \AND (l_2 \neq 0) \THEN
\algvar{validate} \GETS \FALSE
\ELSE
\BEGIN
\SWITCH i
\BEGIN
\CASE 1 \text{ Something 1} \\
\CASE 2 \text{ Something 2} \\
\CASE 3 \text{ Something 3} \\
\CASE 4 \text{ Something 4} \\
\CASEELSE \text{ Something else}
\END
\END
\END \\
\RETURN {\algvar{validate}} \\
\ENDPROCEDURE
\end{pseudocode}
\end{document}
The constructions used by pseudocode is based on arrays, so it's easily modifiable. However, it depends on what you're after in terms of the look of a \SWITCH command, in terms of placement, alignment and justification.
Best Answer
Not equal can be written as: