c++ - Pointer to template function which is NOT member of any class -

i have pointer template function has 2 parameters of type t.

template <typename t> typedef bool( * f )( t, t );  template <typename t> bool mniejsze (t pierwszy , t drugi){     if( pierwszy < drugi)         return true;     return false; } template <typename t> bool wieksze (t pierwszy, t drugi){     if( pierwszy > drugi )         return true;     return false; } 

but get:

 error: template declaration of 'typedef'| 

edit: pass pointer: right way?

template <typename t> t minmax(t a[], int n,bool &f){     return f(a[0],a[1]);  } 

in c++11 can use aliases:

template<typename t> using f = bool( *)( t, t ); 

usage:

f<int> f1 = wieksze; f1( 3, 4); 

http://ideone.com/kyujwp

in c++03 there workoround:

template<typename t> struct f {     typedef bool( *type)( t, t ); }; 

usage:

f<int>::type  f1 = mniejsze<int>; f<int>::type  f2 = mniejsze<int>; f1( 3, 4);  template<typename t> t minmax(t a[], int n, typename f<t>::type fp ){      if ( fp( a[0], a[1])) return 1;     return -1; }  int main() {     // code goes here     f<int>::type  f1 = wieksze<int>;     bool b = f1( 3, 4);     int a[] = { 3, 4};     std::cout << minmax<int>( a, 0, f1);     return 0; } 

http://ideone.com/dh2een