#include <iostream> #include <string> #include <iomanip> using namespace std; class house{ private: string location; int num_of_rooms; int year_built; public: house(); house(string,int,int); void set_location(string); string get_location(); void set_num_of_rooms(int); int get_num_of_rooms(); void set_year_built(int); int get_year_built(); void print_house_details(); };

This is a class declaration for a `house` class with some private member variables and public member functions. Here is an example implementation for the `house_impl.cpp` file:

#include "house.h"

// Default constructor
house::house() {
    location = "";
    num_of_rooms = 0;
    year_built = 0;
}

// Parameterized constructor
house::house(string loc, int num, int year) {
    location = loc;
    num_of_rooms = num;
    year_built = year;
}

// Setter and getter functions for location
void house::set_location(string loc) {
    location = loc;
}

string house::get_location() {
    return location;
}

// Setter and getter functions for number of rooms
void house::set_num_of_rooms(int num) {
    num_of_rooms = num;
}

int house::get_num_of_rooms() {
    return num_of_rooms;
}

// Setter and getter functions for year built
void house::set_year_built(int year) {
    year_built = year;
}

int house::get_year_built() {
    return year_built;
}

// Function to print house details
void house::print_house_details() {
    cout << "Location: " << location << endl;
    cout << "Number of rooms: " << num_of_rooms << endl;
    cout << "Year built: " << year_built << endl;
}

Note that the implementation file should include the header file `house.h` which contains the declaration of the `house` class.