You don't have to declare a special variable for it if you don't care about its actual value.
你并不需要为它声明一个特定的变量,如果你不关心它的实际值。
Now because among its contents is the prototype for print F, that is why, very simply, I can call print F without having to declare its prototype myself.
现在因为在它的内容中是printf的原型,这就是为什么我可以不声明printf函数的原型,而可以调用它。
- Then you declare a float called f and then assign it -- -- let me scroll up for the folks in front -- that give return value of GetFloat.
然后你声明一个float类型f,再赋值-,让我向上为你们回滚到-,给出了GetFloat的返回值。
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