%-------------------------------------------------------
% exercise1.tex
%    Exercise 1.
%
% Irit Dinur
%--------------------------------------------------------

Note: You are to submit printouts of the source codes of the programs
along with printouts of a demonstrated running of each program.
\footnote{ {\bf Course web-page:}
      {\tt http://www.math.tau.ac.il/\tildegen{}dinur/C/fall98-9.html}      } 

Identifiers
Which of the following are legal identifiers and why:
\begin{verbatim}
3id      _yes            0_no_o_no    00_go     star*it
1_i_am   one_i_aren't    xYshouldI    me_to-2   int
\end{verbatim}

\exercise{1.2}{Rectangle}
Write a program that asks the user for values of three sides of a
box (in cm), and outputs the volume (in cubic meters).

\exercise{1.3}{Unit conversion}
Write a conversion program that asks the user for a value in pounds, and then
converts it to kgs. {\it 1 pound = 0.4536 kg }. 

\exercise{1.3}{ASCII}
Write a program that asks the user for a capital letter, and then
prints the same later uncapitalized. (hint: the ASCII value of 'a' is
equal to the ASCII value of 'A'+32).