COMMENT ⊗   VALID 00002 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	\magnification\magstephalf
C00004 ENDMK
C⊗;
\magnification\magstephalf
\input macro.tex
\def\today{\ifcase\month\or
  January\or February\or March\or April\or May\or June\or
  July\or August\or September\or October\or November\or December\fi
  \space\number\day, \number\year}
\baselineskip 14pt
\rm
\line{\sevenrm a45.tex[106,phy] \today\hfill}

\font\rmn=cmr9
{\rmn
{\narrower\smallskip\noindent
{\bf Exercise:} On some computers, the allowed range for negative integers
is larger than that for positive numbers, for example going from
$-2↑{35}$ to $2↑{35}-1$. On such a~machine, the obvious algorithms
for reading integers cause overflow if the input is a large negative
number. Design an algorithm which does not overlow.

[Use {\tt N:=N*10-(ORD(C)-ORD('0'))} after a negative sign.
\smallskip}
}


\bigskip
\line{\copyright 1985 Robert W. Floyd; 
First draft (not published) November 1, 1985\hfil}
%revised: Date; subsequently revised.\hfill}

\bye