#include <iostream>
using namespace std;
class MyArray
{
public:
MyArray(int size);
~MyArray();
public:
int & operator[](int index);
int getLen();
/*
1） 抛出异常eNegative
2）index = 0 抛出异常 eZero
3）index>1000抛出异常eTooBig
4）index<10 抛出异常eTooSmall
5）eSize类是以上类的父类，*/
class eSize
{
public:
eSize(int size)
{
m_size = size;
}
virtual void printS()
{
cout<<"eSize::size:"<<m_size<<endl;
}
protected:
int m_size;
};
class eNegative:public eSize
{
public:
eNegative(int size):eSize(size)
{
cout<<"eNegative"<<endl;
}
void printS()
{
cout<<"eNegative::size:"<<m_size<<endl;
}
};
class eZero:public eSize
{
public:
eZero(int size):eSize(size)
{
cout<<"eZero"<<endl;
}
void printS()
{
cout<<"eZero::size:"<<m_size<<endl;
}
};
class eTooBig:public eSize
{
public:
eTooBig(int size):eSize(size)
{
cout<<"eTooBig"<<endl;
}
void printS()
{
cout<<"eTooBig::size:"<<m_size<<endl;
}
};
class eTooSmall:public eSize
{
public:
eTooSmall(int size):eSize(size)
{
cout<<"eTooSmall"<<endl;
}
void printS()
{
cout<<"eTooSmall::size:"<<m_size<<endl;
}
};
protected:
private:
int *m_space;
int m_size;
};
MyArray::MyArray(int size)
{
if (size<0)
{
throw eNegative(size);
}
else if(size==0)
{
throw eZero(size);
}
else if (size>1000)
{
throw eTooBig(size);
}
else if(size<3)
{
throw eTooSmall(size);
}
m_space = new int[size];
m_size = size;
}
MyArray::~MyArray()
{
if (m_space!=NULL)
{
delete[] m_space;
m_size = 0;
}
}
int & MyArray::operator[](int index)
{
return m_space[index];
}
int MyArray::getLen()
{
return m_size;
}
int main()
{
try
{
MyArray a(2);
for (int i =0;i<a.getLen();i++)
{
a[i] = i+1;
printf("a:%d\n",a[i]);
}
}
catch (MyArray::eSize &e)
{
e.printS();
//cout<<e.<<endl;
}
catch (...)
{
cout<<"未知异常"<<endl;
}
system("pause");
return 0;
}
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