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cs 161 Exam 2|Questions with Correct Verified Answers
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cs 161 Exam 2|Questions with CorrectVerified Answers
Mistakes that allow a program to run, but cause it to produce erroneous results are called
a) logic errors.
b) syntax errors.
c) linker errors.
d) compiler errors.
e) none of the above. - ANSWER A
#include <iostream> is an example of a(n)
a) I/O statement.
b) stream directive.
c) comment.
d) preprocessor directive.
e) compiler option. - ANSWER D
Suppose str = " Hello There. ". The output of the
statement cout << str.size() << endl;
is ____.
a) 11
b) 12
c) 13
,d) 14 - ANSWER D
Before a variable in C++ is used, it must be
a) created
b) initialized
c) used in some expression
d) begin with a capital letter
e) contain only letters, digits and underscores - ANSWER A
A function prototype is ____.
a) a definition, but not a declaration
b) a declaration and a definition
c) a declaration, but not a definition
d) a comment line
e) None of the above - ANSWER C
What is the output of the following C++ code?
count = 1;
num = 25;
while (count < 25)
{
num = num - 1;
count++;
}
cout << count << " " << num << endl;
a) 24 0
b) 24 1
, c) 25 0
d) 25 1
e) None of the above - ANSWER D
Assume this code fragment is embedded in an otherwise correct and complete program. What
should be the output from this code segment?
int main() {
for( int i = 0; i < 10; i++)
{
cout << "hello" << endl;
}
cout << i << endl;
return 0;
}
a) 10
b) 9
c) 0
d) The variable i is undefined in this scope, so this should not compile - ANSWER D
Which control construct repeats a sequence of statements one or more times?
a) while statement
b) do-while statement
c) switch statement
d) if-else statement
e) none of the above - ANSWER B
Which of the following is not true of the || operator?
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