三法则。Copy 构造函数、赋值运算符实现 [已关闭]

问：

三法则。复制构造函数、赋值运算符实现

#include <iostream>
using namespace std;

class IntPart
{
public:
 IntPart(); // default constructor
 IntPart(int n); 

private:
 unsigned int* Counts;
 unsigned int numParts;
 unsigned int size;
};

IntPart::IntPart()
{
 Counts = new int[101] (); // allocate all to 0s
 numParts = 0;
}

IntPart::IntPart(int n)
{
 Counts = new int[n+1] (); // allocate all to 0s
 Counts[n] = 1;
 numParts = 1;
}

int main ()
{
 IntPart ip2(200);
 IntPart ip3(100);

 IntPart ip(ip2); // call default and copy constructor?

 IntPart ip4; // call default constructor
 ip4 = ip3;

 system("pause"); return 0;
}

显然，这需要有三法则。 你能帮我定义它们吗？

问题0.

IntPart ip(ip2);

这是否创建调用默认构造函数的 ip 对象 之后，调用 copy constructor？ 我说得对吗？

问题1.定义析构函数。

IntPart::~IntPart()
{ delete [] Counts; }

这是对的吗？

问题2.定义复制构造函数。

IntPart::IntPart(const IntPart& a)
{ // how do I do this? I need to find the length... size.... could anybody can do this?
}

问题3.定义赋值运算符。

IntPart& IntPart::operator= (const IntPart& a)
{
  if ( right != a)
  {
    // Anybody has any idea about how to implement this?
  }
  return *this;
}

谢谢 我将不胜感激！