EECS 281 - LAB 1 QUIZ QUESTIONS AND ANSWERS

EECS 281 - LAB 1 QUIZ QUESTIONS AND
ANSWERS


What is the correct login string for CAEN?
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NOTE:In this class, when we want to indicate that you should use a variable but we are writi
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ngtext in a document, we will surround the variable with < and >. For example, for optionA in
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the following answers, Dr. Paoletti's personal login string would .u
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mich.edu, because he would replace <uniqname> with his uniqname(paoletti).
xz xz xz xz xz xz xz xz




A. ssh <uniqname>@login.engin.umich.edu
xz xz




B. ssh <uniqname>@engin.umich.edu
xz xz




C. ssh <uniqname>@caen.umich.edu
xz xz




D. ssh <uniqname>@umich.edu - ans-A
xz xz xz xzxz




Why do we use Makefiles?
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A. They can create the submission files automatically.
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B. They automate the (sometimes long and complex) compilation process for us.
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C. They can run custom testing scripts.
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D. Typing out compilation commands every time is annoying.
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E. All of the above. - ans-E
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Will your program compile on the autograder without the project identifier?
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A. Yes.
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B. NO, and I'll potentially waste the submission. - ans-B
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What is the Makefile command to create a submission file that includes custom test cases?
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A. make
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B. make all
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C. make partialsubmit
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D. make fullsubmit - ans-D
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Which of the following is a debugging tool?
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A. Makefile
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B. perf
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C. valgrind
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D. cin - ans-C
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What does perf do? xz xz xz

, A. Detects segmentation faults in a program and displays line numbers that they occurred a
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t.
B. Profiles program execution time.
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C. Profiles program memory usage.
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D. Automates the testing process. - ans-B
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What is wrong with the following program?
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int add ( int a , int b );
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int main () {
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int x = 1;
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int y = 5;
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return add (x , y );
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}

A. add() has no definition.
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B. add() is called with x and y, but accepts a and b.
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C. The program does not compile because main() cannot return a value of 6.
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D. A function cannot be called after a return statement.
xz xz xz xz xz xz xz xz xz




E. Nothing is wrong with this program. - ans-A
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What is wrong with the following program?
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int main () {
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int x = 0;
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return x + y ;
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}
A. main() cannot return the result of an arithmetic expression.
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B. main() cannot return x + y because x + y is a double.
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C. main() does not contain a declaration for y.
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D. main() cannot return an integer.
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E. Nothing is wrong with this program. - ans-C
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What is wrong with the following program?
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# include < vector >
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int * get_some_ints () {
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std :: vector < int > ints = {1 , 2 , 3 , 4 , 5};
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return ints . data ();
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}
int main () {
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int * some_ints = get_some_ints ();
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delete [] some_ints ;
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return 0;
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}
A. The memory pointed to by some ints is freed twice.
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B. main() leaks the memory pointed to by some ints.
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C. A function cannot return a pointer.
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