在使用<代码>cout时,在<代码><iomanip>上界定的缺省格式是什么? 换言之,一旦我用<条形码>固定<>/代码>,使用<条形码>;<固定与带;<固定式(2),我如何重新改动? 或者,我对它做了哪些改动?
<代码>正对面:固定<>/代码>。
(You find a nice list of manipulators in this great answer.)
答案是std:defaultfloat in C++11. 在C++03中实现这一目标,你可以这样做。
cout.unsetf(std:ios_base:floatfield);
您可使用resetiosflags(,以揭开任何国旗。
<代码>正对面:固定<>/代码>。 这对你来说可能是这样。
However, if you want to restore more flags, or if you need the previous state, instead of the default you can use better solutions:
the std::resetiosflags manipulator lets you reset specific flags to their defaults;
the two ios::flags functions let you save and restore the previous values of the format flags.
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