Shell Programming and Scripting

 #!/bin/sh

ask_question() {
        question_text="${1}";
        question_answer="";

        while [ -z "${question_answer}" ]
        do
                echo "${question_text}:";
                read question_answer
        done

        eval user_input_${2}="${question_answer}";
}

ask_question "First Name" "first"

echo "$user_input_first";

eval user_input_${2}=\${question_answer}

eval user_input_$2=\$question_answer