Referencing Class Object Inside of Class Not Working - c++

Question

I am trying to write a Program to solve the Die Hard Bucket Puzzle, Most of the Code works fine except for the Pour Function which references the class objects.
I have double checked the arrhythmic in the pour function and have checked that the function is reading the correct capacities
#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;
class Bucket{
private:
string name;
int capacity, contents;
public:
Bucket(string name_, int capacity_){
name = name_;
capacity = capacity_;
}
void Print(){
cout << "Bucket Name: " << name << endl;
cout << "Capacity: " << capacity << " Gallons" << endl;
cout << "Contents: " << contents << " Gallons" << endl;
}
void Fill(){
contents = capacity;
}
void Empty(){
contents = 0;
}
void Pour(Bucket A){
if (contents + A.contents > A.capacity){
contents -= A.capacity;
A.contents = A.capacity; //Error Here
}
else{
A.contents += contents; //Error Here
contents = 0;
}
}
};
int main(){
Bucket A1("A", 3), A2("B", 5);
int x;
cout << "0 - Exit" << endl << "1 - Fill Bucket A" << endl;
cout << "2 - Empty Bucket A" << endl << "3 - Pour A into B" << endl;
cout << "4 - Fill Bucket B" << endl << "5 - Empty Bucket B" << endl;
cout << "6 - Pour B into A" << endl << "7 - Print" << endl;
cout << "8 - Solve Die Hard Puzzle" << endl;
cin >> x;
while (x != 0){
switch (x){
case 0:{
return 0;
}
case 1:{
A1.Fill();
A1.Print();
cin >> x;
break;
}
case 2:{
A1.Empty();
A1.Print();
cin >> x;
break;
}
case 3:{
A1.Pour(A2);
A1.Print();
A2.Print();
cin >> x;
break;
}
case 4:{
A2.Fill();
A2.Print();
cin >> x;
break;
}
case 5:{
A2.Empty();
A2.Print();
cin >> x;
break;
}
case 6:{
A2.Pour(A2);
A1.Print();
A2.Print();
cin >> x;
break;
}
case 7:{
A1.Print();
A2.Print();
}
case 8:{
A2.Fill();
A2.Pour(A1);
A2.Fill();
A2.Pour(A1);
A2.Print();
}
default:{
cout << "Invailid Input." << endl;
cin >> x;
break;
}
}
}
return 0;
}
The programming outputs the incorrect contents for the bucket being poured into, outputting 0 instead of the actual number