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printf的格式说明符中的'F'是什么意思?

[英]What does an 'F' in the Format specifier of printf mean?

What does %.8Ff format specifier in printf do? printf中的%.8Ff格式说明符做什么?
What does F mean? F是什么意思?

According to the manual : 根据手册

The F conversion specifier produces "INF", "INFINITY", or "NAN" instead of "inf", "infinity", or "nan", respectively. F转换说明符分别产生“ INF”,“ INFINITY”或“ NAN”,而不是“ inf”,“ infinity”或“ nan”。

In your format string %.8Ff , the f is treated as a literal character and printed as an f . 在格式字符串%.8Fff被视为文字字符并被打印为f

将字面量f放在格式说明符之后的一种可能用法是打印一个字符串,该字符串稍后由C或C ++编译器解析为float常量而不是double常量。

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