So conceptually the key difference here, besides the syntax looking slightly different, it just means that if you want a chunk of code to execute no matter what initially, ; you can use the do while loop; if you want to check a condition first, you can use the while loop.
所以概念上,则关键的区别是,除了语法看起来有点不同,它的意思是如果你想要一段代码,最初无论如何都要执行,你就可以用do,while循环;,如果你想要先检查条件,你可以用while循环。
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