#include<iostream>
using namespace std;
enum index{underflow, overflow};
int array_index(int *A, int n, int index);
int main()
{
  int *A = new int[10];
  for(int i=0; i<10; i++)
    A[i] = i;
  try
  {
    cout<<array_index(A,10,5)<<endl;
    cout<<array_index(A,10,-1)<<endl;
    cout<<array_index(A,10,15)<<endl;
  }
  catch(index e)
  {
    if(e == underflow)
    {
      cout<<"index underflow!"<<endl;
      exit(-1);
    }
    if(e == overflow)
    {
      cout<<"index overflow!"<<endl;
      exit(-1);
    }
  }
  return 0;
}
int array_index(int *A, int n, int index)
{
  if(index < 0) throw underflow;
  if(index > n-1) throw overflow;
  return A[index];
}

int * p;
try
{
  p = new int[10];
}
catch(bad_alloc)
{
  cerr<<"allocate failure!"<<endl;
  exit(-1);
}

#include <exception> 
#include <iostream> 
using namespace std; 
 
/********************************** 
//project -> Properties -> C/C++ -> Code Generation --> Enable C++ Exceptions 
//選擇 Yes with SEH Exceptions (/EHa) 這樣的話C++的try catch 也可以捕獲到空指針，內(nèi)存越界，0除異常 
//默認(rèn)是選擇Yes (/EHsc) 
**********************************/ 
 
void TestIntType() 
{ 
  try 
  { 
    throw 1; 
  } 
  catch(...) 
  { 
    cout<< "在 try block 中, 準(zhǔn)備拋出一個(gè)異常." << endl; 
  } 
} 
 
void TestDoubleType() 
{ 
  try 
  { 
    throw 0.5; 
  } 
  catch(...) 
  { 
    cout<< "在 try block 中, 準(zhǔn)備拋出一個(gè)異常." << endl; 
  } 
} 
 
void TestEmptyPointType() 
{ 
  try 
  { 
    int* p = NULL; 
    *p = 3; 
  } 
  catch(...) 
  { 
    cout<< "非法地址操作異常" << endl; 
  } 
} 
 
void TestDivZeroType() 
{ 
  try 
  { 
    int b = 0; 
    int a = 3/b; 
  } 
  catch(...) 
  { 
    cout<< "0除異常" << endl; 
  } 
} 
 
void TestMemoryOutType() 
{ 
  int * a = new int[4]; 
  try 
  { 
    for (int i = 0; i<245; i++) 
    { 
      a++; 
    } 
    *a = 3; 
  } 
  catch(...) 
  { 
    cout<< "內(nèi)存越界異常" << endl; 
  } 
} 
 
int main(int argc, char* argv[]) 
{ 
  TestEmptyPointType(); 
  //TestDivZeroType(); 
  TestMemoryOutType(); 
  return 1; 
}