操纵者在g ++ / gcc-2.96下表现得很奇怪 [英] manipulators act strange under g++/gcc-2.96
问题描述
g ++ / gcc-2.96中的操纵符似乎有问题。首先
有些没有在std ::中定义，其次，当在流上使用这个操纵器
时，它们给出了奇怪的结果。一个小的测试程序显示
它：
#include< cstdlib>
#include< iostream>
int main（int argc，char ** argv）
{
// std :: cout<< std :: fixed<< std :: showpoint<< 0.123456789<< std :: endl;
std :: cout<< std :: ios :: fixed<< std :: ios :: showpoint<< 0.123456789<< std :: endl;
退出（EXIT_SUCCESS）;
}
编译并运行此程序给出了结果如下：
~ $。/ a.out
40962560.123457
~ $
任何人都知道这里出了什么问题？
提前感谢您的帮助。
Darius。
Hi,
there seems to be a problem with manipulators in g++/gcc-2.96. First
some are not defined in std:: and second, when using this manipulators
on streams, they give strange results. A small test-programm to show
it:
#include <cstdlib>
#include <iostream>
int main(int argc, char **argv)
{
//std::cout << std::fixed << std::showpoint << 0.123456789 << std::endl;
std::cout << std::ios::fixed << std::ios::showpoint << 0.123456789 << std::endl;
exit(EXIT_SUCCESS);
}
Compiling and running this programm gives the following result:
~$ ./a.out
40962560.123457
~$
Anyone got an idea whats going wrong here ?
Thanks in advance for your help.
Darius.
推荐答案
./ a.out
40962560.123457
~
./a.out
40962560.123457
~
任何人都知道这里出了什么问题？
先谢谢你的帮助。
Darius。
Anyone got an idea whats going wrong here ?
Thanks in advance for your help.
Darius.
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"Darius.Moos AT esigma-systems DOT de" <pf*********@gmx.de> wrote in message
news:c6************@ID-193014.news.uni-berlin.de...
你好，
g ++ / gcc-2.96中的操纵器似乎存在问题。首先
有些没有在std ::中定义，其次，当在流上使用这个操纵器时，它们会产生奇怪的结果。一个小的测试程序来显示它：
#include< cstdlib>
#include< iostream>
int main（int argc ，char ** argv）
{st / :: // std :: cout<< std :: fixed<< std :: showpoint<< 0.123456789<<
std :: endl; std :: cout<< std :: ios :: fixed<< std :: ios :: showpoint<< 0.123456789
<< std :: endl;
退出（EXIT_SUCCESS）;
}
编译并运行此程序会得到以下结果：
〜
Hi,
there seems to be a problem with manipulators in g++/gcc-2.96. First
some are not defined in std:: and second, when using this manipulators
on streams, they give strange results. A small test-programm to show
it:
#include <cstdlib>
#include <iostream>
int main(int argc, char **argv)
{
//std::cout << std::fixed << std::showpoint << 0.123456789 << std::endl; std::cout << std::ios::fixed << std::ios::showpoint << 0.123456789 << std::endl;
exit(EXIT_SUCCESS);
}
Compiling and running this programm gives the following result:
~
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