Defining new command for Multiple Choice Questions

Question

I checked out this page and they have very good answers but not exactly what I'd need. I would want the justification to be like it is in the answer they gave with everything in one line touching the margins but would like to make a new command for it instead of typing everything each time. Something like it is given in this page

\choice{apple}{banana}{orange}{pear}

So I tried defining a command like

\documentclass[a4paper,addpoints,answers,12pt]{exam}
\usepackage{graphicx,tabularx,caption,color,subcaption,amsmath,amssymb,lmodern,textcomp,gensymb,ifpdf,ifthen}

\newcommand{\mcq}{%
    \begin{oneparchoices}
        \choice #1
        \choice #2
        \choice #3
        \choice #4
        \choice #5
    \end{oneparchoices}
}
    \begin{document}
        \mcq{uihoo}{eifhw2u}{fiwuhr}{fjwhf}{fnweir}
    \end{document}

But this has too many errors:

line 12: Illegal parameter number in definition of \mcq. }
line 12: Illegal parameter number in definition of \mcq. }
line 12: Illegal parameter number in definition of \mcq. }
line 12: Illegal parameter number in definition of \mcq. }
line 12: Illegal parameter number in definition of \mcq. }
line 14: You can't use `macro parameter character #' in horizontal mode. \mcq
line 14: You can't use `macro parameter character #' in horizontal mode. \mcq
line 14: You can't use `macro parameter character #' in horizontal mode. \mcq
line 14: You can't use `macro parameter character #' in horizontal mode. \mcq
line 14: You can't use `macro parameter character #' in horizontal mode. \mcq

I will try whatever solution given with oneparcheckboxes too but let's first have this answer.

Answer 1

You need to tell LaTeX how many arguments there will be:

\newcommand{\mcq}[5]{...