do...while 语句

语法

do {
    A;       // single or multiple statement(s)
} while (B); // condition statement

C;           // expression
  • A 会在条件测试之前执行一次
  • while() 后面必须有一个分号,因为是一个语句

流程图

                      true
                  +-------------+
                  v             |
+---------+     +---+         +---+  false   +---+     +-------+
| (start) | --> | A | ------> | B | -------> | C | --> | (end) |
+---------+     +---+         +---+          +---+     +-------+

示例

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