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C do 关键字

❮ C 关键字


示例

以下循环将始终至少执行一次,即使条件为假,因为代码块在条件被测试之前就被执行了

int i = 0;

do {
  printf("%d\n", i);
  i++;
}
while (i < 5);
自己尝试 »

定义和用法

do 关键字与 while 一起使用来创建 do/while 循环。

while 循环只要指定条件为真,就循环遍历一段代码块。

do/while 循环是 while 循环的一个变体。此循环将在检查条件是否为真之前先执行一次代码块,然后只要条件为真,它就会重复循环。

注意:不要忘记增加条件中使用的变量,否则循环将永远不会结束!


相关页面

在我们的 C Do/While 循环教程 中了解更多关于 do/while 循环的信息。


❮ C 关键字

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