S We saw percent S which is a placeholder for a string, turns out as you'll see over time there are other placeholders.

我们知道字符串占位符，输出来就是另一番场景了,还有一些其他类型的占位符。

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> >> David: F, c because I want to tell printf, "Use these values in those placeholders, these values in those format strings."

>，【无法辨认的声音】,>>，大卫：“f，c“因为我想告诉printf，“在那些占位符,和那个格式下打印这些值“

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Because the for loop hands me placeholders in between those semicolons for variables and such, now I don't have those with while loops.

因为for循环给我提供了为变量准备的占位符,它们在分号之间，现在在while循环中，我没有这些。

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