这段代码的问题是什么啊...按我的设想应该是12+4=16才对啊c++的

/*定义一个树类有成员树龄成员函数grow(intyears对age加上years,age()显示树对象的ages的值*/
#include <iostream>
#include <cstdlib>
using namespace std;
class tree
{
int ages;
public:
tree(int n = 0);
  ~tree();
  void grow(int years);
  void age();
};
tree::tree(int n)
{
ages = n;
}
tree::~tree()
{
age();
}
void tree::grow(int years)
{
ages += years;
}
void tree::age()
{
cout << \"sfasfdw\" << ages<<endl;
}
int main()
{
tree t(12);
t.age();
t.grow(4);
system(\"pause\");
return 0;
}

论坛小伙伴，看看有谁会C++帮樱花树下芳乃樱 看一下，感谢！

去掉system(\pause\); 改完后如下
#include<iostream>
#include<cstdlib>
using namespace std;
class tree
{
int ages;
public:
tree(int n = 0);
  ~tree();
  void grow(int years);
  void age();
};
tree::tree(int n)
{
ages = n;
}
tree::~tree()
{
age();
}
void tree::grow(int years)
{
ages += years;
}
void tree::age()
{
cout<<“ sfasfdw”<< ages<<endl;
}
int main()
{
tree t(12);
t.age();
t.grow(4);

return 0;
}