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\documentclass{article}
\input{common}
\renewcommand{\tt}[1]{\texttt{#1}}
\newcommand{\kc}{$^*$}
\renewcommand{\not}{$^\wedge$}
\newcommand{\pc}{$^+$}
\newcommand{\e}{$\epsilon$}
\includeversion{version:soln}
\begin{document}
\begin{flushleft}
Homework - Chapter 1 \\
CS 5300 %\\
\end{flushleft}
\begin{enumerate}
\item (6 points) What is the difference between a compiler and an interpreter?
\begin{version:soln}
\soln Put your solution here.
\end{version:soln}
\myspace
\item (6 points) According to the book, what are the advantages of
\begin{tightenumerate}
\item a compiler over an interpreter?
\item an interpreter over a compiler?
\end{tightenumerate}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) Discuss the portability across computers of compiled vs. interpreted programs.
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) Strictly speaking, Java is an interpreted language. Discuss how it has elements of being a compiled language.
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) The C compiler \textit{gcc} has an \tt{-S} option that will output assembly code before the assembler is run. Why might someone want to do this? Give at least two reasons.
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) If id2 has a value of 8 and id3 has a value of 12, after running the following code, what will be in registers R1 and R2?
\begin{lstlisting}
LDF R1, id2
LDF R2, id3
ADDF R1, R1, R2
\end{lstlisting}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) The assembler will fail on this assembly code. Why?
\begin{lstlisting}
LDF R1, id2
LDF R2, id3
ADDF R1, id2, R2
\end{lstlisting}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) If id5 is 2 and id7 is 9, what will be in id3 after running this code?
\begin{lstlisting}
LDF R1, id7
LDF R2, id5
ADDF R1, R1, R2
MULF R1, R2, #3.0
STF id3, R1
\end{lstlisting}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) Which of the following terms apply to Javascript? Which apply to Python? \\
a)~imperative b)~declarative c)~von Neumann d)~object-oriented e)~third-generation f)~fourth-generation g)~scripting
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (5 points) C is not considered an object-oriented language, yet it has structs, which are kind of like objects. Why is it not object-oriented?
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) Give three examples of programs for which optimization that changes the behavior of the program would be very, very bad.
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (5 points) Give an example of a program for which optimization that changes the behavior of the program might not be so bad.
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (8 points) Given the following blocks in a C++ program, create a table like figure 1.11 in the textbook.
\includegraphics[width=.4\textwidth]{blocks.pdf}
\begin{tabular}{c|c}
\toprule
Declaration & Scope \\
\midrule
\tt{int b = 1;} & \\
\tt{int a = 2;} & \\
\tt{int b = 2;} & \\
\tt{int b = 3;} & \\
\tt{int a = 4;} & \\
\tt{int b = 4;} & \\
\tt{int a = 5;} & \\
\bottomrule
\end{tabular}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
%\newpage
\item (8 points) For the following block-structured C code, indicate the values assigned to $w, x, y,$ and $z$.
\begin{lstlisting}[language=C]
int w, x, y, z;
int i = 5;
int j = 8;
{ int i = 4;
j = 9;
w = j - i;
}
x = j - i;
{ int j = 10;
y = j - i;
i = 3;
}
z = j - i;
\end{lstlisting}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\newpage
\item (8 points) For the following block-structured C code, indicate the values assigned to $w, x, y,$ and $z$.
\begin{lstlisting}[language=C]
int w, x, y, z;
int i = 2;
int j = 5;
{ int i = 3;
w = i + j;
}
x = i + j;
{ int j = 9;
i = 7;
y = i + j;
{ i = 6;
}
}
z = i + j;
\end{lstlisting}
\begin{version:soln}
\soln
\end{version:soln}
\myspace
\item (6 points) What is printed by the following C code?
\begin{lstlisting}[language=C]
#define a (x+3)
int x = 4;
void b() { x = a-1; printf("%d,", x); }
void c() { int x = 1; printf("%d\n", a); }
void main() { b(); c(); }
\end{lstlisting}
\begin{version:soln}
\soln
\end{version:soln}
\end{enumerate}
\end{document}
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