std::showpos
ios_base& showpos (ios_base& str);
Show positive signs
Sets the
showpos format flag for the
str stream.
When the showpos format flag is set, a plus sign (
+) precedes every non-negative numerical value inserted into the stream (including zeros).
This flag can be unset with the noshowpos manipulator.
For standard streams, the showpos flag is not set on initialization.
本文介绍了C++标准库中的showpos标志如何使用。当设置了showpos标志后,所有非负数值在插入到流中时都会显示正号(+)。文章还提到可以通过noshowpos操纵符来取消该标志。
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