STL之Set自定义排序

struct classCompare

{

bool operator()(const int& lhs, const int& rhs)

   {

return lhs < rhs ;

}

};

int main(void)

{

set<int, classCompare> aSet ;

system("pause") ;

return 0 ;

}

bool fncmp(int lhs, int rhs)

{

return lhs < rhs ;

}

int main(void)

{

bool(*fn_pt)(int, int) = fncmp ;

set<int, bool(*)(int, int)> aSet(fn_pt) ;

system("pause") ;

return 0 ;

}