class FeetInches
{
private:
	int feet; // 英尺
	int inch; // 英寸
public:
	FeetInches(int f = 0, int i = 0)//构造函数
	{
		feet = f; inch = i;
	}
	friend FeetInches hanshu(<span style="font-family: Arial, Helvetica, sans-serif;">FeetInches& a</span><span style="font-family: Arial, Helvetica, sans-serif;">);</span>
};
FeetInches hanshu(<span style="font-family: Arial, Helvetica, sans-serif;">FeetInches& a</span><span style="font-family: Arial, Helvetica, sans-serif;">)</span>
{
	cout << a.feet << " " << a.inch << endl;
}

class FeetInches
{
private:
	int feet; // 英尺
	int inch; // 英寸
public:
	FeetInches(int f = 0, int i = 0)//构造函数
	{
		feet = f; inch = i;
	}
	FeetInches hanshu();
};
void FeetInches::hanshu()//(1)
{
	cout << feet << " " << inch << endl;
	cout << this->feet << " " << this->inch << endl;
}

class FeetInches
{
private:
	int feet; // 英尺
	int inch; // 英寸
public:
	FeetInches(int f = 0, int i = 0)
	{
		feet = f; inch = i;
	}
	FeetInches operator+(const FeetInches& a);//重载加法
	friend  ostream& operator<<(ostream& out, const FeetInches& a);//重载输出符
	bool operator>(const FeetInches& a);//重载大于号
	FeetInches operator*(const int a);//重载乘号
	FeetInches& operator++();//重载先++
	FeetInches operator++(int);//重载后++
};
FeetInches& FeetInches::operator++()
{
	inch++;
	if (inch >= 12)feet += inch / 12, inch %= 12;
	return *this;
}
FeetInches FeetInches::operator++(int)
{
	FeetInches temp=*this;
	inch++;
	if (inch >= 12)feet += inch / 12, inch %= 12;
	return temp;
}
bool FeetInches::operator>(const FeetInches& a)
{
	if (feet > a.feet)return true;
	if (feet < a.feet)return false;
	return inch>a.inch ? true : false;
}
FeetInches FeetInches::operator+(const FeetInches& a)
{
	feet += a.feet;
	inch += a.inch;
	return *this;
}
FeetInches FeetInches::operator*(const int a)
{
	feet = a*feet;
	inch = a*inch;
	if (inch >= 12)feet += inch / 12, inch %= 12;
	return *this;
}
ostream& operator<<(ostream& out,const FeetInches& a)
{
	out << a.feet << " " << a.inch << endl;
	return out;
}

(2)

FeetInches a(2,4),b(6,8),c,d;
 cout << a + b << endl;
 d=c++;
 cout << c++ << " " << ++c << endl;

FeetInches add(FeetInches& a，FeetInches& a)
{
<span style="white-space:pre">	</span>b.getfeet() += a.getfeet();
<span style="white-space:pre">	</span>b.getinch() += a.getinch();
<span style="white-space:pre">	</span>return *this;//上面说过
}//getfeet();getinch();为获取私有成员的函数
FeetInches a(1,2),b(3,4);
add(a,b);//每次相加都要写add（）的函数调用