Weird output with template class and generic types. What is happening?

Question

https://code.sololearn.com/c64SUEDmLFHj

This program yields some weird output but don´t know why.
I expect it to give me the greater of two or four numbers but obj1, obj2, obj3 return 7 digit numbers. Someone has an answer or had anything similar like in this case?

Output expected: Output returned:
66 66
48 4264281
48 8917632
48 4264123
48 48
531.4 531.4

template <class T>
class Pair {
private:
T first, second, third, forth;
public:
// Pair takes 2 or 4 parameters of any type
Pair(T a, T b, T c, T d) :first(a), second(b), third(c), forth(d) {};
Pair(T a, T b) :first(a), second(b) {};
auto bigger();
};

template <class T>
auto Pair<T>::bigger() {

T returnValue1 = (first > second ? first : second);
T returnValue2 = (third > forth ? third : forth);
T returnValue = (returnValue1 < returnValue2 ? returnValue2 : returnValue1);
return returnValue;

};

int main()
{
Pair<double>obj(54, 33.2, 44, 66);
cout << obj.bigger() << endl;

Pair<long long>obj1(48, 33.2);
cout << obj1.bigger() << endl;

Pair<long long>obj2(48, 33.2);
cout << obj2.bigger() << endl;

Pair<long>obj3(48, 33.2);
cout << obj3.bigger() << endl;

Pair<long>obj4(48, 33.2);
cout << obj4.bigger() << endl;

Pair<float>obj5(531.4, 33.2, 44, 66.67);
cout << obj5.bigger() << endl;
};

Output:
66
4264281
8917632
4264123
48
531.4

Answer 1

You should initialize third and fourth even with the constructor taking only two values or those attributes will have junk values like that