// doesn't work

a.h

#include <string>
#include <iostream>
class Human {
private:
    std::string full_name;
    int         height;
    int         wight;
public:
    Human(std::string name, int h, int w); // コンストラクタ
    std::string name()  { return full_name; }
    int get_height()    { return height; }
    int get_weight()    { return weight; }
    void grow_fat(int dw);
    void slim_off(int dw);
};

class.cpp

#include <string>
#include "a.h"
Human::Human(string name, int h, int w)
{
    full_name   = name;
    height      = h;
    weight      = w;
}
void Human::grow_fat(int dw)
{
    weight += dw;
}
void Human::slim_off(int dw)
{
    weight -= dw;
}

main.cpp

#include <iostream>
#include <string>
#include "a.h"
using namespace std;
void print_Human(string title, Human *p)
{
    std::cout << title << p->name() << " "
        << p->get_height() << "com " << p->get_weight() << "kg" << std::endl;
}
int main()
{
    Human chomado("chomado", 152, 45);
    chomado.grow_fat(2);
    print_Human("chomado = ", &chomado);
}