源程序：
#include
int main (int argc,char**argv)
{
cout<
return 0;
}
终端命令：zhaowei@zhaowei-desktop:~$ g++ -c hello.cpp
hello.cpp:1:22: error: iostream.h: No such file or directory
hello.cpp: In function ‘int main(int, char**)’:
hello.cpp:4: error: ‘cout’ was not declared in this scope
hello.cpp:4: error: ‘endl’ was not declared in this scope
zhaowei@zhaowei-desktop:~$
终端命令：(查找标准库头文件)
zhaowei@zhaowei-desktop:~$ locate iostream
/usr/include/c++/4.4/iostream
/usr/include/giomm-2.4/giomm/fileiostream.h
/usr/include/giomm-2.4/giomm/iostream.h
/usr/include/giomm-2.4/giomm/private/fileiostream_p.h
/usr/include/giomm-2.4/giomm/private/iostream_p.h
/usr/include/glib-2.0/gio/gfileiostream.h
/usr/include/glib-2.0/gio/giostream.h
/usr/include/gstreamermm-0.10/gstreamermm/giostreamsink.h
/usr/include/gstreamermm-0.10/gstreamermm/giostreamsrc.h
/usr/include/gstreamermm-0.10/gstreamermm/private/giostreamsink_p.h
/usr/include/gstreamermm-0.10/gstreamermm/private/giostreamsrc_p.h
zhaowei@zhaowei-desktop:~$
