Known as c + + can through iostream cout and cin or through cstdio (stdio. H) printf () and the scanf () for input and output, but when using the iostream recently, there is a problem, a small test code is as follows:

 
# include & lt; Iostream>//an error problem is out of here, import the iostream times of wrong, because the next line setting a breakpoint or wrong, so that's the problem here 
using namespace std; 
Int main () 
{
Int number; 
Cout<& lt;" Both Please input a number: "& lt; Cin> Number; 
Cout<& lt;" You had inputted "& lt; return 0; 
} 

After the operation error , also opened another program, should be the inside of the iostream, my c + + compiler (DevC++) said that there is a fault, error section is as follows:

 
Template<> 
The class allocator 
{
Public: 
Typedef size_t size_type; 
Typedef ptrdiff_t difference_type; 
Typedef void * pointer; 
Typedef const void * const_pointer; 
Typedef void value_type. 

TemplateStruct the rebind 
{typedef allocator<_Tp1 & gt; The other; }; 
}; 

/* * 
* @ brief The @ a standard allocator, as per [20.4]. 
* 
* See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt04ch11.html 
* for further details. 
*/
TemplateThe class allocator: public __glibcxx_base_allocator & lt; The _Tp & gt;//an error here, said it expected '{' before' & lt; 'token 
{
Public: 
Typedef size_t size_type; 
Typedef ptrdiff_t difference_type; 
Typedef _Tp * pointer; 
Typedef const _Tp * const_pointer; 
Typedef _Tp & amp; The reference; 
Typedef const _Tp & amp; Const_reference; 
Typedef _Tp value_type. 

TemplateStruct the rebind 
{typedef allocator<_Tp1 & gt; The other; }; 

Allocator () throw () {} 

The allocator (const allocator& __a) throw () 
: __glibcxx_base_allocator & lt; The _Tp & gt; (__a) {} 

TemplateThe allocator (const allocator<_Tp1 & gt; & amp;) Throw () {} 

~ allocator () throw () {} 

//Inherit everything else. 
}; 

I just wonder, iostream library also can be wrong??????? later tests found that iomanip library also not line, are the problems of the above procedures, and the same problem,

I doubt my Dev - c + + version problem, version don't remember, I used, may be a few 5.2, now update to 5.11 a, turn your bosses, there is something wrong with here?

Help you bosses!!!!!! Hope to answer, thank!!!!!!