Mapping integers to types using C++ template fails in a specific case -

I am trying to compile the following template based code in VC ++ 2005.

  #include & lt; Iostream & gt; using namespace std; / * * T is a template that maps to an integer for a specific type. * Mapping is done through partial template expertise * The following t & lt; 1 & gt; Has been mapped to four, T & LT; 2 & gt; Has been mapped for long * and t & lt; 3 & gt; Partial Template Specialists * / Templates & lt; Int x & gt; Has been mapped to float using. Structure t {public:}; The template's & lt; & Gt; Structure t & lt; 1 & gt; {PUBLIC: TYPE TEXT FOUR EXTEP; }; The template's & lt; & Gt; Structure t & lt; 2 & gt; {Public: Long exhaust type; }; The template's & lt; & Gt; Structure t & lt; 3 & gt; {Public: Typefaf float exetype; }; // We will not accept any special T & lt; N & gt; Typically xType can be accessed easily. Typedef T & lt; 3 & gt; :: xType x3Type; / *! * In the following we do not have the t & lt; N & gt; Trying to use. Another * template inside class T2 & lt; R & gt; * / Template & lt; Int r & gt; Structure T2 {// We T & lt; R> Any other type of T3 Typingfed T & lt; R> T3; // typedef T3 :: xType xType failed in the following line; }; Int main () {T & lt; 1 & gt; :: xType a1; Cout & lt; & Lt; Typed (A1) .name () & lt; & Lt; Endl; T & lt; 2>: xType a2; Cout & lt; & Lt; Typed (A2) .name () & lt; & Lt; Endl; T & LT; 3>: xType a3; Cout & lt; & Lt; Typed (A3) .name () & lt; & Lt; Endl; Return 0; }  

There is a special line in the code that does not compile:

  typedef T3 :: xType xType;  

If I extract this line, then the compile gets cured and its result is:

>

If I retain this line, compilation errors are celebrated.

  main.cpp (53): Warning C4346: 't & lt; X & gt; :: xType ': Depending on the name' typename is not a type prefix 'to indicate one type main.cpp (54): The class template's instant' T2 and lieutenant; R & gt; Compile is being main.cpp (53): error C2146: syntax error: missing ';' 'XType' main.cpp (53) before identifier: Error C4430: Missing type specifier - int assumed. Note: C ++ does not support default-int  

I'm not able to ensure that T: extty can be considered as a type of T2 template inside is. Any help is highly appreciated.