Chapter 4 Flashcards
A portion of a program that repeats a statement or group of statements is called a
loop
The statement or group of statements to be repeated in a loop is called the
body
Each repetition of the loop body is called ___ of the loop
iteration
___ statement repeats its action again and again as long as a controlling boolean expression is true.
while
True or false, A while Loop Can Perform Zero Iterations
True
A loop is always executed at least once.
do-while loop
A loop that iterates its body repeatedly without ever ending is called
infinite loop
What kind of loop enables you to easily write a loop that is controlled by some sort of counter
for-loop
What are the part of for loop called? for (___ ; ____; ____ ) Body
(Initializing_Action; Boolean_Expression; Update_Action)
A semicolon by itself is considered a statement that does nothing, it is called an empty statement or
null statement
The portion of a program in which a variable has meaning is known as the variable’s
scope
We use a comma, not a semicolon, to separate the initialization actions, such a comma is called?
comma operator.
A loop typically involves three elements:
the initializing statements, the loop body, and the mechanism for ending the loop
The two most kind of loop errors are
1- unintended infinite loop 2- off by-one error
What kind of loop error is this “ This error causes your loop to repeat its body either one too many times or one too few times” ?
off by-one error “ Off-by-one errors are caused by an incorrect boolean expression”
