On 11 July 2011 07:32, eric wrote: > Dear c++ programers: > > If you are also an g++ programers, especially ever create/modify its > source code, I need your help > I have a piece simple code about formatting a date/time as a string > from a book. its authors claim it work in vc++7.1 on xp. > but my g++4.5.2 didn't pass it on compile stage You need to learn to solve these problems yourself, or you're not learning anything. > ------------------------------------------------------------------------------------------- > eric@eric-laptop:~/cppcookbook/ch5$ g++ Example5-4.cpp > Example5-4.cpp: In function ‘std::ostream& > formatDatetime(std::ostream&, const tm&, const char*)’: > Example5-4.cpp:16:17: error: invalid use of incomplete type ‘const > struct std::time_put<char>’ The compiler tells you the type "time_put" is not defined, so you probably haven't included the header that defines it. Look at any reference (e.g. http://dinkumware.com/manuals/default.aspx?manual=compleat&page=locale2.html#time_put or http://cplusplus.com/reference/std/locale/time_put/) and you'll find you need to #include <locale>
