模板函数里能用 typeid 吗，小弟我这崩溃了

template<typename T>
void c(T*a, T*b)
{
    if( typeid(T) == typeid(char) )
    {
        cout<<"char type"<<endl;
    }
    else if( typeid(T) == typeid(wchar_t) )
    {
        cout<<"wchar_t type"<<endl;
    }
}
void main()
{
    wchar_t*a,*b;
    c<wchar_t>(a,b);
}

template<typename T>
void c(T*a, T*b)
{
    if( typeid(T) == typeid(char) )
    {
        cout<<"char type"<<endl;
    }
    else if( typeid(T) == typeid(wchar_t) )
    {
        cout<<"wchar_t type"<<endl;
    }
}
int main()
{
    wchar_t*a=0;
    wchar_t*b=0;
    c<wchar_t>(a,b);

    system("pause");
    return 0;
}