create_object.cc

来自「做为SD0609的一员,我扎实的基础是如何打出来的,来看看我那时连猴子选大王都不」· CC 代码 · 共 58 行

#include <iostream>
using namespace std;

class A{
	int data;
public:
	A( int d=0 );
	A( const A& ca );
	~A();
	void show();
	A add( A other );
	A copyTo( A& other );
};
A A::copyTo( A& other )
{
	other.data = data;
	return other;
}
A::A( int d )
:data(d)
{
	cout << "A(" << data << ")" << endl;
}
A::A( const A& ca )
{
	data = ca.data;
	cout << "A( const A& )" << endl;
}
A::~A()
{
	cout << "~A()" << data << endl;
}
void A::show()
{
	cout << "data=" << data << endl;
}
A A::add( A other )
{
	cout << "====begin add====" << endl;
	int sum = data+other.data;
	A obj( sum );
	cout << "====end add====" << endl;
	return obj;
}


int main(int argc, char* argv[])
{
	A a1(3), a2(5),a3;
	cout << "===============" << endl;
	a1.add(a2).show();
	cout << "===============" << endl;
	a1.copyTo(a3).show();
	cout << "===============" << endl;
	return 0;
}