he expression static$\_$cast$(6\mathrm{.}9)+$ static$\_$cast$(7\mathrm{.}9)$ evaluates to $\_\_\_\_.$

$13$

$14$

$14\mathrm{.}8$

$15$

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Question $7$

Question $7$

$1$ Point

The length of the string "computer science" is $\_\_\_\_.$

$14$

$15$

$16$

$18$

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Question $8$

Question $8$

$1$ Point

Suppose that count is an int variable and count $=1.$ After the statement count$++$; executes, the value of count is $\_\_\_\_.$

$1$

$2$

$3$

$4$

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Question $9$

Question $9$

$1$ Point

Suppose that alpha and beta are int variables. The statement alpha $=--$beta; is equivalent to the statement$($s$)\_\_\_\_.$

alpha $=1-$ beta;

alpha $=$ beta $-1$;

beta $=$ beta $-1$;

alpha $=$ beta;

alpha $=$ beta;

beta $=$ beta $-1$;

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Question $10$

Question $10$

$1$ Point

Suppose that alpha and beta are int variables. The statement alpha $=$ beta$++$; is equivalent to the statement$($s$)\_\_\_\_.$

alpha $=1+$ beta;

alpha $=$ alpha $+$ beta;

alpha $=$ beta;

beta $=$ beta $+1$;

beta $=$ beta $+1$;

alpha $=$ beta;

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Question $11$

Question $11$

$1$ Point

Suppose that alpha and beta are int variables. The statement alpha $=++$beta; is equivalent to the statement$($s$)\_\_\_\_.$

beta $=$ beta $+1$;

alpha $=$ beta;

alpha $=$ beta;

beta $=$ beta $+1$;

alpha $=$ alpha $+$ beta;

alpha $=$ beta $+1$;

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Question $12$

Question $12$

$1$ Point

Which of the following is the newline character?

$\backslash$r

$\backslash$l

$\backslash$b

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Question $13$

Question $13$

$1$ Point

Consider the following code.

$//$ Insertion Point $1$

using namespace std;

const float PI $=3\mathrm{.}14$;

int main$()$

$\{$

$//$Insertion Point $2$

float r $=2\mathrm{.}0$;

float area;

area $=$ PI $*$ r $*$ r;

cout $<<$ "Area $="<<$ area $<>$ one $>>$ two; executes, $\_\_\_\_.$

one $=10\mathrm{.}5,$ two $=10\mathrm{.}5$

one $=10\mathrm{.}5,$ two $=30\mathrm{.}6$

one $=30\mathrm{.}6,$ two $=30\mathrm{.}6$

one $=11,$ two $=31$