A-M baby

Task/Increment-a-numerical-string/LaTeX/increment-a-numerical-string.tex

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+\documentclass{article}
+
+% numbers are stored in counters
+\newcounter{tmpnum}
+
+% macro to increment a string (given as argument)
+\newcommand{\stringinc}[1]{%
+\setcounter{tmpnum}{#1}%     setcounter effectively converts the string to a number
+\stepcounter{tmpnum}%        increment the counter; alternatively: \addtocounter{tmpnum}{1}
+\arabic{tmpnum}%             convert counter value to arabic (i.e. decimal) number string
+}
+
+%example usage
+\begin{document}
+The number 12345 is followed by \stringinc{12345}.
+\end{document}