true or false 1. if (a < 3 && b > x && c != 12) { ... } when a equals 10, C++ wi

Question

true or false

1. if (a < 3 && b > x && c != 12) { ... }

when a equals 10, C++ will short-circuit, report the answer as false,not evaluate the entire logical expression to determine the answer and skip over the statement block inside the { }s.

my choice: true

2. A function may accept either pass-by-reference or pass-by-value parameters, but not both in the same function.

my choice: true

3. In C++, when float variables are left uninitialized, their initial value will not equal zero.

my choice: false

4. Within a C++ program, all variables regardless of their type go thru a "life-cycle" which includes declaration, initialization, usage and finally dying off when the variable falls out of scope.

my choice: false

MC

1. Pam the Programmer wants to ensure that a few lines of code are only run when a certain circumstance occurs. Which kind of statement should she use?

Explanation / Answer

1. true

2. false (Try running a code[one parameter as &var1 and the other as var2] using both. It will work. )

3. true (such values are called garbage values)

4.true (that is how memory is used)

1. a. if statement (you chose do-while but in do-while the control enters the loop at least once because the while is written after the body)

2. d . optional

3.a. return statement

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