mjhjmtu

SE

I am trying to draw the image below in LaTeX using lstlisting, tikzpicture, minipage, and tabular

The code that I got so far can be seen below

documentclassarticle
usepackage[utf8]inputenc

usepackagetikz
usetikzlibrarytikzmark
usepackagelistings

lstsetlanguage=C,
 basicstyle=ttfamily,
 frame=single,
 keywordstyle=colorbluettfamily,
 stringstyle=colorredttfamily,
 commentstyle=colorgreenttfamily,
 morecomment=[l][colormagenta]#


begindocument

beginminipage0.8textwidth

begintikzpicture

 draw[- >,overlay] (1.5,-2.8) -- node [below] (int, int) (4,-0.8);

endtikzpicture

begintabularcc
 beginlstlisting[language=C]
void foo()

 int q = 5;
 int l = 6;

 bar(q, l);


endlstlisting

&
beginlstlisting[language=C]
void bar(int a, int b)

 ...
 ...
 ...
 ...

endlstlisting

endtabular

endminipage

enddocument

The code above results in the following piece of 'art'

Is there anyone that can polish this 'art', so it looks a bit more to the target image?

With kind regards,

Xhendos

EDIT:
Changed my code so it is compileable

tikzmark, which you are loading, has a library for that purpose, listings, which allows you to refer to lines of the code without actually modifying it. And I am using this nice answer.

documentclassarticle
usepackagelistings
usepackagetikz
usetikzlibrarytikzmark
usetikzmarklibrarylistings
lstsetlanguage=C,
 basicstyle=ttfamily,
 %frame=single,
 keywordstyle=colorbluettfamily,
 stringstyle=colorredttfamily,
 commentstyle=colorgreenttfamily,
 morecomment=[l][colormagenta]#


newcountertmkcount
tikzset
 use tikzmark/.style=
 remember picture,
 overlay,
 execute at end picture=
 stepcountertmkcount
 ,
 ,
 tikzmark suffix=-thetmkcount

begindocument
%beginminipage0.8textwidth

begintabularl
multicolumn1ltextttfile_x.c &
multicolumn1l &
multicolumn1ltextttfile_y.c\
cline1-1 cline3-3
beginlstlisting[language=C,name=codeL]
void foo()

 int q = 5;
 int l = 6;

 bar(q, l);


endlstlisting
begintikzpicture[use tikzmark]
coordinate (aux) at (pic cs:line-codeL-6-end);
endtikzpicture
& &
beginlstlisting[language=C,name=codeR]
void bar(int a, int b)

 ...
 ...
 ...
 ...
 ...

endlstlisting\
cline1-1 cline3-3
endtabular
begintikzpicture[use tikzmark]
draw[-latex] ([yshift=2ex,xshift=-3ex]aux) to[bend left=10] 
node[midway,above,sloped](int,int) (pic cs:line-codeR-1-start);
endtikzpicture
%endminipage
enddocument

as tikz image:

documentclassarticle
usepackagetikz
usetikzlibrarypositioning, quotes
usepackagelistings
lstsetlanguage=C,
 basicstyle=ttfamily,
 keywordstyle=colorbluettfamily,
 stringstyle=colorredttfamily,
 commentstyle=colorgreenttfamily,
 morecomment=[l][colormagenta]#


 begindocument
 begintikzpicture[
node distance = 22mm,
 box/.style = draw, align=left
 ]
node (a) [box]
hspace*-2em%
 beginlstlisting[language=C]
void foo()

 int q = 5;
 int l = 6;

 bar(q, l);

endlstlisting
;
node (b) [box, right=of a]
hspace*-2em%
beginlstlisting[language=C]
 void bar(int a, int b)

 ...
 ...
 ...
 ...

 endlstlisting
;
draw[->, black!75] ([shift=(2.2,-4.4ex)] a.west) to [pos=0.7,"(int,int)", sloped] ([shift=(2ex,8ex)] b.west);
endtikzpicture
enddocument