Exam (elaborations)
Programming with C++ Exam 2 Review
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Programming with C++ Exam 2 ReviewRelational operators allow you to ________ numbers. - ANS compare
All of the relational operators are binary.
True or False? - ANS True
The ________ statement causes other program statements to execute only under certain conditions. -
ANS if
To check if a variable has a particular value, use the = relational operator, as in the statement
if (s = 3)
cout << "S has the value 3";
True or False? - ANS False
A pair of characters or a pair of string objects can be compared with any of the relational operators.
True or False? - ANS True
In C++ when a relational expression is false, it has the value - ANS 0.
A(n) ________ is a variable, usually a bool, that signals when a condition exists. - ANS flag
The ________ statement executes one block of statements if a test condition is true, and another block
if the condition is false. - ANS if/else
A trailing else placed at the end of an if/else if statement provides a default action when ________ of
the if conditions is/are true. - ANS none
, When an if statement is placed within the conditionally-executed code of another if statement, this is
known as a(n) - ANS nested if
The rule for matching an else with an if is that an else goes with the last if statement before it that
doesn't have its own else.
True or False? - ANS True
The C++ ________ operator represents logical AND. - ANS &&
If the sub-expression on the left side of an || operator is true, the expression on the right side will not
be checked.
True or False? - ANS True
logical operators AND and OR have a higher precedence than the NOT operator.
True or False? - ANS False
The ________ operator takes an operand and reverses its truth or falsehood. - ANS !
The following C++ test checks if the variable child is in the range 3 to 12.
if (child >= 3 || child <= 12)
True or False? - ANS False
Assuming goodData is a Boolean variable, the following two tests are logically equivalent.
if (goodData == false)
if (!goodData)
True or False? - ANS True
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