How to change the font style (not the size but the style) of algorithimc package

Question

I would like to change the font of the algorithm package. It's currently using serif and I would like to try either sans serif or typewritter font. I have tried to use the following code (which I adapted from this link) by simply using the \ttdefault at line 5 but it does not work. How can I achieve my aim?

\documentclass{article}
\usepackage{algpseudocode,algorithm}

\makeatletter
\algrenewcommand\ALG@beginalgorithmic{\ttdefault}
\makeatother

\begin{document}
\begin{algorithm}
  \caption{Euclid’s algorithm}\label{euclid}
  \begin{algorithmic}[1]
    \Procedure{Euclid}{$a,b$}\Comment{The g.c.d. of $a$ and $b$}
      \State $r \gets a \bmod b$
      \While{$r \not= 0$}\Comment{We have the answer if $r$ is 0}
        \State $a \gets b$
        \State $b \gets r$
        \State $r \gets a \bmod b$
      \EndWhile\label{euclidendwhile}
      \State \textbf{return} $b$\Comment{The gcd is $b$}
    \EndProcedure
  \end{algorithmic}
\end{algorithm}
\end{document}

Answer 1

If I'm not wrong, you should just use \usepackage{algpseudocode} because it seems to re-implement algorithms and it's the one that defines things like \State, etc.

There doesn't appear to be a single, simple way to change the font (maybe you should consider a different code package?).

The keywords in the code are defined in the package like this:

\algnewcommand\algorithmicfunction{\textbf{function}}

and you can change that to

\algrenewcommand\algorithmicfunction{\texttt{function}}

You can make similar changes to some of the other keywords. This won't change the other text though, like "Euclid" and the text in the comments. You can change some of this by wrapping algorithm in a group with a font declaration.

\documentclass{article}
\usepackage{algpseudocode}
\algrenewcommand\algorithmicprocedure{\texttt{procedure}}
\begin{document}
{\tt
\begin{algorithmic}
\Procedure{Euclid}{a,b}
\State $ABC$ ABC \Comment{this is a test}
\EndProcedure
\end{algorithmic}
}
\end{document}

But this still won't change the font for the math part. To change that font, either don't put it in math, or look at a package like mathastext that redefines the math fonts.