error: ... does not name a type

**baxy** · 04-12-2015

Hi,

I do not understand why this does not work:

Code:

#include <cstdlib>
#include <iostream>

using namespace std;


template <typename Tint>
class D{
  typedef struct XX{
    int x;
  }XX;
  XX* size (Tint z);
  public:
  D();
  Tint get(Tint);
};

template <typename Tint>
D<Tint>::D(){}

template <typename Tint>
XX* D<Tint>::size(Tint z){
  XX* h;
  Tint j = sizeof(Tint);
   h->x = j*z;
  return h;
}

template <typename Tint>
Tint D<Tint>::get(Tint){
  XX* d;
  d=size(10);
  return d->x;
}


int main (){
  D<int> f;
  cout << f.get(10) <<endl;
  return 0;
}

error i get is:

Code:

g++ -std=c++0x -o test test.cpp 
test.cpp:22:1: error: ‘XX’ does not name a type

how to make it work ???

**laserlight** · 04-12-2015

You need to qualify it as typename D<Tint>::XX

**baxy** · 04-12-2015

thnx!

**Elysia** · 04-12-2015

Btw, this:

Code:

typedef struct XX{
    int x;
}XX;

Is just plain not necessary. It's a relic from C.
Just write

Code:

struct XX
{
    int x;
};

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