Environment with customizable number of table columns

Question

I want to make macros for drawing group of questions with same answers with customizable text, number of answers and design (column widths, alignment, etc.), like this:

\begin{questionGroup}{Question group description}{3}{|p{100}|c|c|c|}
    Questions& yes& no& maybe\\\hline
    \groupQuestion{Question1}
    \groupQuestion{Question2}
\end{questionGroup}

The number of columns in generated rows is dynamical and numbers in all cells except first are also generated.

The best I had managed to make work is:

\documentclass{article}
\usepackage{tikz}
% #1 - question group title
% #2 - answer count
% #3 - table design
\newenvironment{questionGroup}[3]{
\noindent\QuestionID{}\textbf{#1}\\
\setlength{\tabcolsep}{2pt}
\setcounter{subQuestionID}{0}
\newcounter{answerCount}
\setcounter{answerCount}{#2}
\begin{tabular}{#3}
\hline
}{\end{tabular}\\}
\newcommand{\groupQuestion}[1]{
\subQuestionID{}.~#1&
\foreach \n in {1,...,\value{answerCount}}{
  \n 
}
\\\hline
}
\newcounter{QuestionID}
\newcommand{\QuestionID}{\addtocounter{QuestionID}{1}\textit{\arabic{QuestionID}.}}
\newcounter{subQuestionID}
\newcommand{\subQuestionID}{\addtocounter{subQuestionID}{1}{\textit{\alph{subQuestionID}}}}

\begin{document}
\begin{questionGroup}{Question group description}{3}{|p{100}|c|c|c|}
    Questions& yes& no& maybe\\\hline
    \groupQuestion{Question1}
    \groupQuestion{Question2}
\end{questionGroup}
\end{document}

To complete this I need the following:

• [DONE] pass a number of answers (parameter of the environment) inside \groupQuestion{} command;
• [DONE] print incrementing numbers for each answer of each question in separate column from 1 to number given as environment parameter;
• output table column separators from \foreach - currently it returns error after inserting & before \n

Answer 1

After some time I had resolved this question by the following code:

\documentclass{article}
\usepackage{forloop}
\newcounter{QuestionID}
\newcommand{\QuestionID}{\addtocounter{QuestionID}{1}\textit{\arabic{QuestionID}.}}
\newcounter{subQuestionID}
\newcommand{\subQuestionID}{\addtocounter{subQuestionID}{1}{\textit{\alph{subQuestionID}}}}
\newcounter{answerCount}
\newcounter{answerID}
\newcommand{\answerID}{\addtocounter{answerID}{1}{\textit{\arabic{answerID}}}}
\newcommand{\answerIDn}{\textit{\arabic{answerID}}}
\newenvironment{questionGroup}[3]{
    \noindent\QuestionID{}~\textbf{#1}
    \setlength{\tabcolsep}{1pt}
    \setcounter{subQuestionID}{0}
    \setcounter{answerCount}{#2}
    \\\noindent
    \begin{tabular}{#3}
    \hline
}
{\end{tabular}}
\newcommand{\groupQuestion}[1]{
    \small\subQuestionID{}.~#1
    \setcounter{answerID}{0}
    \forLoop{1}{\value{answerCount}}{answerID}{
        &\answerIDn{}}
    \\\hline
}
\begin{document}
\begin{questionGroup}{Question group description}{3}{|p{50mm}|c|c|c|}
    Questions& yes& no& maybe\\\hline
    \groupQuestion{Question1}
    \groupQuestion{Question2}
\end{questionGroup}
\end{document}

Hope someone could make a good use of it.

Answer 2

Can't say that I fully understand your question. But here is a version that compiles and should get you started. You had code to produce a letter for the questions so I left that, even though your image had shown numbers. If you want numbers there instead use:

\newcommand{\subQuestionID}{\addtocounter{subQuestionID}{1}{\textit{\arabic{subQuestionID}}}}

\documentclass{article}
% #1 - question group title
% #2 - answer count
% #3 - table design
\newcounter{answerCount}
\newenvironment{questionGroup}[3]{%
    \noindent\QuestionID~\textbf{#1}\par%
    \setlength{\tabcolsep}{2pt}%
    \setcounter{subQuestionID}{0}%
    \setcounter{answerCount}{#2}%
    \tabular{#3}
    \hline
}{\endtabular}
\newcommand{\groupQuestion}[4]{\subQuestionID{}.~#1&#2&#3&#4\\\hline}
\newcounter{QuestionID}
\newcommand{\QuestionID}{\addtocounter{QuestionID}{1}\textit{\arabic{QuestionID}.}}
\newcounter{subQuestionID}
\newcommand{\subQuestionID}{\addtocounter{subQuestionID}{1}{\textit{\alph{subQuestionID}}}}

\begin{document}
\begin{questionGroup}{Question group description}{3}{|p{2cm}|c|c|c|}
    Questions& Yes& No& Maybe\\\hline
    \groupQuestion{Question1}{1}{2}{3}
    \groupQuestion{Question2}{1}{2}{3}
\end{questionGroup}
\end{document}