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ser334_exam1_practice.lyx
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SER 334 Practice Exam 1
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(SOLN)
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Updated 2/4/2022
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NOT FOR STUDENT DISTRIBUTION
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$
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Last 4 digits of ASU ID:
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$
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Exam Instructions
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The exam is open one note card (3x5 inches).
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No electronic items are allowed.
Write legibly.
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Please use a pen (instead of a pencil) if you have one.
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Multiple choice questions:
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Short answer questions:
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There are 30 points of short answer questions.
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Each short answer question is worth ~10 points.
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Scenario questions:
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The programming questions are given near the end of the paper.
They must be answered on the question paper.
There are 20 points of write-in programming questions.
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Topic
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Earned
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Possible
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MC: C Programming I
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10
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SA: C Programming I
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MC: C Programming II
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10
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MC: C Programming III
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5
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SA: C Programming III
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MC: Operating-System Structures
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5
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SA: Operating-System Structures
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10
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Scen: C Programming II
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Total:
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80
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Multiple Choice: C Programming
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What is the difference between global variables and static variables? [5
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Acuña, Pilcher
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Global variables can be changed, while static variables cannot be changed.
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There is no difference between global and static variables since they are
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Global variables can be accessed from anywhere, while static variables are
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ANS
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Global variables can only be accessed from the scope in which they were
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Consider the following function:
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inline false
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int* getNextUserID() {
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int users = db_get_user_count("db1");
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static int uid = users + 1;
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return &uid;
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}
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Will the memory allocation in this function work reliably? [5 points]
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FC19
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Yes - it will return an address.
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Yes - the memory used by the return value will persist since it is not stack
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\begin_layout Enumerate
No - the memory used will be overridden by any new function call the program
makes.
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No - it will only work some of the time, depending on when getNextUserID
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ANS
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Short Answer: C Programming
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For the following C code, fill in the value of each variable at the given
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If the value of the variable cannot be determined at a given point in the
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If the value is an address, write address of
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$
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rule{1cm}{0.15mm}$
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.
[10 points]
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\noindent
Gutierrez
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lstparams "language=C"
inline false
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\begin_layout Plain Layout
int w = 0, *x = &w, y = 0;
\end_layout
\begin_layout Plain Layout
// Point 1
\end_layout
\begin_layout Plain Layout
w = 5;
\end_layout
\begin_layout Plain Layout
y = -1;
\end_layout
\begin_layout Plain Layout
// Point 2
\end_layout
\begin_layout Plain Layout
x = &y;
\end_layout
\begin_layout Plain Layout
y = 10;
\end_layout
\begin_layout Plain Layout
w = y + *x;
\end_layout
\begin_layout Plain Layout
// Point 3
\end_layout
\end_inset
\end_layout
\begin_layout Standard
\begin_inset VSpace 1cm
\end_inset
\end_layout
\begin_layout Standard
\begin_inset Branch soln
inverted 1
status open
\begin_layout Standard
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="5">
<features tabularvalignment="middle">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
Type
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
int
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
int pointer (dereferenced)
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
int pointer
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
int
\end_layout
\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
Variable Name
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
w
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
*x
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
x
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
y
\end_layout
\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
Point 1
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text
\begin_layout Plain Layout
\end_layout
\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text