Introducing the while()… statement

The while()… statement has the following syntax:

while( continuation_expression ) statement_body

It consists of a continuation_expression and a loop body. At each iteration of the while loop, the continuation_expression is evaluated. If its result is true, statement_body is executed and continuation_expression is evaluated again. When the continuation_expression evaluates to false, the loop ends; the execution resumes after statement_body. If continuation_expression initially evaluates to false, the statement_body loop is never executed.

statement_body is – or may be – a single statement, or even the null statement (a single ; without an expression), but most often, it is a compound statement. Note that there is no semicolon specified as a part of the while()… statement. A semicolon would appear as a part of a single statement in statement_body, or would be absent in the case of statement_body consisting...