class template and construct function template

#include <iostream>

using namespace std;

template <
           typename TClassType
         >
class TClass {
public:
    
    template <
               typename TFuncType
             >
    TClass( TClassType var1, TFuncType var2) { mVar = var1 * var2; }

    template <
               typename TFuncType
             >
    TClass( TClassType var1, TFuncType var2, TFuncType var3) { mVar = var1 * ( var2 + var3); }

    void printTo() { cout << mVar << endl; }
protected:
private:
    TClassType mVar;
};



int
main( int argc, char **argv) {

    TClass< int > inst( 1024, 2.2, 2.8);

    inst.printTo();

    return 0;
}