拷贝构造函数浅拷贝（10）

#ifndef
#define
#include <iostream>
using namespace std;
class A {
public:
  int a;
  int b;
  void show();
  A(A &c);
  A();

};

#endif

#include "A.h"
A::A() {

  this->a = 5;
  this->b = 6;
  cout << "A::A()" << endl;
}

A::A(A &a) {//浅拷贝
  this->a = a.a;
  this->b = a.b;
  cout << "A::A(A &a)" << endl;

}

#include "A.h"
#include <iostream>
using namespace std;

void fun() {
  A a1;
  A a2 = a1;//拷贝构造函数,浅拷贝
  cout << "a2.a = " << a2.a << "  a2.b = " << a2.b << endl;
}


int main() {
  fun();

}