CIS 111 Week4 True/False

T

A local variable's scope always ends at the closing brace of the block of code in which it is declared.

T

An important style rule you should adopt for writing if statements is to write the conditionally executed statement on the line after the if statement.

F (write on next line)

An important style rule you should follow when writing if statements is to line up the conditionally executed statement with the if statement.

T

Because the && operator performs short-circuit evaluation, your boolean expression will usually execute faster if the subexpression that is most likely false is on the left of the && operator.

T

Because the || operator performs short-circuit evaluation, your boolean expression will generally be evaluated faster if the subexpression that is most likely to be true is on the left.

T

The if/else statement will execute one group of statements if its boolean expression is true or another group if its boolean expression is false.

T

In a switch statement, each of the case values must be unique.

F (only need one copy of code)

In a switch statement, if two different values for the CaseExpression would result in the same code being executed, you must have two copies of the code, one after each CaseExpression.

F (may be multiple paths)

Programs never need more than one path of execution.

T

Unicode is an international encoding system that is extensive enough to represent ALL the characters of ALL the world's alphabets.

F (does test for case of character)

When testing for character values, the switch statement does not test for the case of the character.

F (are considered)

When two Strings are compared using the compareTo method, the cases of the two strings are not considered.