Annotation of loncom/html/adm/help/tex/Numerical_Response_Simple_Example.tex, revision 1.3
1.2 bowersj2 1: \label{Numerical_Response_Simple_Example}
1.1 bowersj2 2:
3: A script consists of several \textbf{statements}, separated by \textbf{semi-colons}.
4: A \textbf{statement\index{statement}} is the smallest kind of instruction
5: to the computer. Most problems will be built from several statements.
6:
7: A script can contain \textbf{comments}, which are not interpreted as statements
1.3 ! vandui11 8: by the computer. Comments start with \textbf{\#} and go to the end of that
1.1 bowersj2 9: line. Thus, if a line starts with \#, the whole line is ignored. Comments
10: can also begin in the middle of a line. It is a good idea to comment more
11: complicated scripts, as it can be very difficult to read a large script and
12: figure out what it does. It is a \emph{very} good idea to adopt some sort
13: of commenting standard, especially if you are working in a group or you believe
14: other people may use your problems in the future.
15:
16: \begin{itemize}
17: \item One of the simplest statements in LON-CAPA is a \textbf{variable assignment}.
18: A \textbf{variable} can hold any value in it. The variable name must start
19: with a \textbf{\$}. In the \textbf{Script}, you need to assign to variables
20: before you use them. Put this program into the \textbf{Script} field of the
21: Numerical Response:
22:
23: \begin{lyxcode}
24: \$variable~=~3;
25: \end{lyxcode}
26: This creates a variable named \textbf{variable} and assigns it the value
27: of {}``3''. That's one statement.
28:
29: \end{itemize}
30: Variable names are \emph{case sensitive}, must start with a letter, and can
31: only consist of letters, numbers, and underscores. Variable names can be
32: as long as you want.
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