C++ :: Values Getting Stuck In Memory?

I have a school project where I have to create a class with 2 attributes that default to 1. To verify that they are at 1, I have a cout before any user inputs or value manipulation. It works for the most part. What happens is that if I change the defaults to 17, the cout will retain the old values until I have an unsuccessful build (remove a semicolon from the end of the line). When I have a successful build (put that semicolon back), the cout displays the changed values. Change the values back to 1 and the same thing happens again until I have an unsuccessful build then a successful build. Are the old values getting stuck in memory somewhere?

// Rectangle.h
// Chapter 9_Problem 9.11_Page 412
#include <iostream>
using namespace std;
#ifndef RECTANGLE_H
#define RECTANGLE_H
class Rectangle // Rectangle class {
public:
Rectangle(double = 17, double = 17); // default constructor setting values to 1

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