CS 159 Lab 6

A piece of data is called logical if it conveys the idea of true or false.

true

C programmers use other types, such as integers, to represent logical data.

true

If a data value is zero it is considered false, but any non-zero value is considered true.

true

The logical AND (&&) operator is true only when both operands are true.

true

The logical OR (||) operator is true only when exactly one of its operands is true

false; could be both are true

The AND and OR operator share the same level of operator precedence.

false; AND is higher

The short-circuit method of evaluating logical expressions will stop evaluating the current expression as soon as the result can be determined.

true

Relational Operators

less than, greater than, <=, >=; higher precedence than the equality operators

Equality Operators

==, !=; lower precedence than relational

The complement of the equal operator is the not equal operator.

true

The complement of the greater than operator is the less than operator.

false; less than equal to operator

When attempting to print the result of a logical expression that is true as an integer the result will always be 1.

true

The logical expression of an if...else construct must be enclosed in parentheses.

true

There is no semi-colon that follows the logical expression of an if...else construct.

true

The statements found inside of an if...else may be any statement, including another if...else construct.

true

if(a != 0) and if(!a) are equivalent statements.

false; complements

if(a == 0) and if(a) are equivalent statements.

false; complements

The conditional expression is a two-way selection construct

true

Negative logic refers to any expression that begins with a NOT operator or that contains multiple NOT operators within.

true

Complementing a condition is one way to potentially remove negative logic from an expression.

true

The only way to complement a NOT operator is with another NOT operator

false

When writing a selection construct the most probable conditions should come before those that occur less frequently.

true

It is possible to indicate on a structure chart when a user-defined is called from within a section construct.

true