template<typename T1, typename T2>
class Test
{
public:
    Test(T1 i,T2 j):a(i),b(j){cout<<"模板类"<<endl;}
private:
    T1 a;
    T2 b;
};

template<>
class Test<int , char>
{
public:
    Test(int i, char j):a(i),b(j){cout<<"全特化"<<endl;}
private:
    int a;
    char b;
};

template <typename T2>
class Test<char, T2>
{
public:
    Test(char i, T2 j):a(i),b(j){cout<<"偏特化"<<endl;}
private:
    char a;
    T2 b;
};