Iteration Statements (C++)

 

For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.

Iteration statements cause statements (or compound statements) to be executed zero or more times, subject to some loop-termination criteria. When these statements are compound statements, they are executed in order, except when either the break statement or the continue statement is encountered.

C++ provides four iteration statements — while, do, for, and range-based for. Each of these iterates until its termination expression evaluates to zero (false), or until loop termination is forced with a break statement. The following table summarizes these statements and their actions; each is discussed in detail in the sections that follow.

Iteration Statements

StatementEvaluated AtInitializationIncrement
whileTop of loopNoNo
doBottom of loopNoNo
forTop of loopYesYes
range-based forTop of loopYesYes

The statement part of an iteration statement cannot be a declaration. However, it can be a compound statement containing a declaration.

Overview of C++ Statements

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