C / C++ / MFC

char buf[ 56+1 ] ;
for ( size_t i=0 ; i < sizeof(buf)-1 ; ++i )
    buf[i] = 32 + (rand() % (127-32)) ;
buf[i] = '\0' ; 

// ...
template<
class Element, 		
class Traits	= std::char_traits<Element>, 
class Allocator	= std::allocator<Element>
>
struct MyContainer {
	typedef std::basic_string<Element, Traits, Allocator> string_type;
	typedef std::map<string_type, string_type>            type;
};
// ...
template<
class Element, 		
class Traits	= std::char_traits<Element>, 
class Allocator	= std::allocator<Element>,
class Container	= MyContainer::type
>
class basic_configuration {	
    // ...
};
// ...