error: expected template-name before ‘<’ token

[Rahal1813]

Hello: I am writing a derived class, where I have to specify a virtual member function of the base class. The definitions of the member functions of the derived class are in a cpp file.
The code for the Derived class in the header file:

#ifndef MC__MSetINV_H
#define MC__MSETINV_H

#include "setinv.h"     // SetInv is the base class


template <typename T>
class mSetInv: public SetInv<T>
{

 public:

   //Constructor
   mSetInv():  _nt(0), _P_m(0),NTE(4) {};

   // Default Destructor
   ~mSetInv() { delete _P_m;} 

   // Define the set to be inverted, including the error
   void inverted_set
      (const unsigned int nt, const T*P);

   //User-function to subproblem assessment
   typename SetInv<T>::STATUS assess
     ( const unsigned int np, T*P );

 private:
   // number of measurements
   unsigned int _nt;
   // Y set including the error
   T *_P_m;
   // Chebychev expansion order
   unsigned int NTE;

};

#endif 

The error is the last public member function which is the defined virtual class. The base class is 12 pages long but it has a member of type enum and named STATUS.

The relevant part of the main.cpp file :

#include <iostream>
#include "cmodel.hpp"
#include "mSetInv.h"

#ifdef USE_PROFIL
  #include "mcprofil.hpp"
  typedef INTERVAL I;
#else
  #ifdef USE_FILIB
    #include "mcfilib.hpp"
    typedef filib::interval<double> I;
  #else
    #include "interval.hpp"
    typedef mc::Interval I;
  #endif
#endif

typedef mc::CModel<I> CM;
typedef mc::CVar<I> CV;



// Definition of the functions in the class
template <typename T>
inline void mSetInv<T>::inverted_set
( const unsigned int nt, const T*P)
{
   _nt = nt;
   _P_m = new T[_nt];
   for (unsigned int i=0; i<_nt;i++) _P_m[i] = P[i];
}

template <typename T>
inline typename SetInv<T>::STATUS 
mSetInv<T>::assess ( const unsigned int np, T*P )
{ 
  SetInV<T>::STATUS status; 
  // Enclosure of the model fct using Chebychev bounding
     CM mod (np,NTE);  // np: # of state variables
     CV* CVx= new CV[np];
     CV* CVF= new CV[_nt];
     T bounding [_nt];
     for (unsigned int i=0;i<np;i++) 
       CVx[i].set(&mod,i,P[i]);
     CVF = model_function (CVx,CVF);
     for (unsigned int i=0;i<_nt;i++)
        bounding [i] = CVF[i].B();
  // inclusion tests
     bool flag = true;
     T P_inter ; // Just for the purpose of the inter operator
     for (unsigned int i=0;i<_nt;i++){
       if ( Op<T>::l(bounding[i]) > Op<T>::u(P[i]) || Op<T>::u(bounding[i]) < Op<T>::l(P[i]) ) { // no intersection
             delete []CVx;
             delete []CVF;             
             return SetInV::OUTER;
        }
       if ( Op<T>::l(bounding[i]) < Op<T>::l(P[i]) || Op<T>::u(bounding[i]) > Op<T>::u(P[i]) )
              flag =false;
     }
    delete []CVx;
    delete []CVF;
    return (flag?  SetInv<T>::INNER : SetInv::UNDERTERMINED);
}

I really appreciate your help and time.

[LB]

Please copy and paste the entire error and specify exactly which line number it occurs on.

[jasonwynn10]

the error is around line 37

[LB]

Please copy and paste the exact error and specify exactly which line number it occurs on.

[helios]

SetInV is not the same as SetInv. You'll also need to put typename in front of the type.

[Rahal1813]

helios, I did not get what did you mean by put typename infront of the type; the keyword typename is there.
The detailed error:

In file included from main.cpp:16:0:
mSetInv.h:11:29: error: expected template-name before ‘<’ token
mSetInv.h:11:29: error: expected ‘{’ before ‘<’ token
mSetInv.h:11:29: error: expected unqualified-id before ‘<’ token
main.cpp:78:35: error: invalid use of incomplete type ‘class mSetInv<T>’
mSetInv.h:11:7: error: declaration of ‘class mSetInv<T>’
main.cpp:87:49: error: invalid use of incomplete type ‘class mSetInv<T>’
mSetInv.h:11:7: error: declaration of ‘class mSetInv<T>’
make: *** [main.o] Error 1

[Rahal1813]

The error is in this line:

typename SetInv<T>::STATUS assess
     ( const unsigned int np, T*P );

[helios]

This is no use. I need to be able to match the error message to the line in question. Either post the entire code, or correct the line numbers on the error messages.

[ne555]

http://www.eelis.net/iso-c++/testcase.xhtml
Make sure any line numbers you mention in the testcase are correct


Make sure your testcase is self-contained and actually reproduces the problem

template<class T>
class foo{
public:
	enum asdf{};
};

template<class T>
class bar: public foo<T>{
public:
	typename foo<T>::asdf qwerty();
};

compiles


> the error is around line 37
>> SetInV is not the same as SetInv. You'll also need to put typename in front of the type.
>>> helios, I did not get what did you mean
look at line 37

[Rahal1813]

sorry helious for the inconsistency, the modified error message:

mSetInv.h:8:29: error: expected template-name before ‘<’ token
mSetInv.h:8:29: error: expected ‘{’ before ‘<’ token
mSetInv.h:8:29: error: expected unqualified-id before ‘<’ token

I do not know what is wrong in the declaration of the class mSetInv