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The general form of the for statement can be expressed as follows: When using this version of the for statement, keep in mind that: 1  The initialization expression initializes the loop; it's executed once, as the loop begins. 2  When the termination expression evaluates to false, the loop terminates.
The default statement is executed if no case constant-expression is equal to the value of switch ( expression ). If the default statement is omitted, and no case match is found, none of the statements in the switch body are executed. There can be at most one default statement.