I am using Dev-C++ 4.9.8.0,with lambda expression:

.......................

class A{

..............

int result;

double function2(const int& n)

..........................

double function3(const int& Q,const int& N)

.......................

double function1(const int& q, int& n){
    double result=0.0;
    int loopvalue=0, totaltime=n;
    n%=q;
    ++thenumbern;
   ( for_loop(var(loopvalue)=0,var(loopvalue)<=var(totaltime),++var(loopvalue),
        var(result)+=( bind(&A::function2,_2)*bind(&A::function3,_1,_2))))(q,n);
    return result;
} 

But the complier told me that:

................................

\boost\lambda\detail\select_functions.hpp
  instantiated from `Arg::sig<boost::tuples::tuple<A&,.................

instantiated from `RET boost::lambda::lambda_functor_base<boost::lambda::forloop_action, Args>::call(A&, B&, C....................

\boost\lambda\detail\lambda_functors.hpp
  instantiated from `T::sig<boost::tuples::tuple<A&, B&, boost::tuples::null_type, boost::tuples::null_type, ...............  instantiated from here

By the way,  is the result in var(result)   the  double result in function1 or the int result in class A?

Can any one with kindness help me?