C++ 内存泄漏C+；的指针故障+；

我试图初始化一个数组，然后将内存重新分配到相同的地址。这是我的密码：

    //**begin #include files************
#include <iostream> // provides access to cin and cout

//--end of #include files-----------
//----------------------------------

using namespace std;
//----------------------------------

//**begin global constants**********
const int arraySize = 5;
//--end of global constants---------
//----------------------------------


//**begin main program**************
int main()
{
    cout << endl << endl;
    int* nArray = new int[arraySize];
    cout << "  --->After creating and allocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    for (int i = 0; i < arraySize; i++)
    {
        nArray[i] = i*i;
    }
    cout << "  --->After initializing nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl << endl;
    for (int i = 0; i < arraySize; i++)
    {
        cout << "  nArray[" << i << "] = " << nArray[i] << " at address <" << nArray + i << ">" << endl;
    }
    // You'll need a command here to fix the memory leak
    cout << endl << "  --->Before reallocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << endl;
    int* aux = new int[arraySize + 2];
    cout << dec << "  --->After reallocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    for (int i = 0; i<arraySize; i++) {
        aux[i] = nArray[i];
    }
    delete[] nArray;
    nArray = aux;
    cout << endl << "  --->After reinitializing nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl << endl;
    for (int i = 0; i < arraySize + 2; i++)
    {
        cout << "  nArray[" << i << "] = " << nArray[i] << " at address <" << nArray + i << ">" << endl;
    }
    // . . . and also here.
    cout << endl << "  --->Getting ready to close down the program." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    // Wait for user input to close program when debugging.
    cin.get();
    return 0;
}
//--end of main program-------------
//----------------------------------

//**开始#包括文件************
#include//提供对cin和cout的访问
//--结束#包含文件-----------
//----------------------------------
使用名称空间std；
//----------------------------------
//**开始全局常量**********
常数int arraySize=5；
//--全局常数结束---------
//----------------------------------
//**开始主程序**************
int main（）
{
CUT< P>删除一个必须做的数组：<代码> Dele[[n]数组；
> P> >没有强> > ++< /强>一种在C++中实际重新分配向量的方法。所以，你所做的是：

分配一个更大的新向量-将指针存储在
aux
复制aux内容中的旧nArray内容
delete[]
nArray矢量
将aux指定给nArray向量
像

/1，
int*aux=newint[arraySize+2]；
// 2.
//这里故意简单
对于（size_t i=0；我使用std:：vector


fnote++有关“Is Not”的某些值，请参阅链接的
，您可以将同一位置与“”重复使用

你的例子可以是：

//**begin #include files************
#include <iostream> // provides access to cin and cout

//--end of #include files-----------
//----------------------------------

using namespace std;
//----------------------------------

//**begin global constants**********
const int arraySize = 5;
//--end of global constants---------
//----------------------------------


//**begin main program**************
int main()
{
    int reserved[arraySize+2]; // pre allocated enough memory

    cout << endl << endl;
    int* nArray = new (reserved) int[arraySize]; // placement new place nArray at "reserved" location
    cout << "  --->After creating and allocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    for (int i = 0; i < arraySize; i++)
    {
        nArray[i] = i*i;
    }
    cout << "  --->After initializing nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl << endl;
    for (int i = 0; i < arraySize; i++)
    {
        cout << "  nArray[" << i << "] = " << nArray[i] << " at address <" << nArray + i << ">" << endl;
    }
    // You'll need a command here to fix the memory leak
    // Well, not now.
    cout << endl << "  --->Before reallocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << endl;
    int* aux = new (reserved) int[arraySize + 2]; // and again, placement new place aux at "reserved" location
    cout << dec << "  --->After reallocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    for (int i = 0; i<arraySize; i++) {
        aux[i] = nArray[i];
    }
    //delete[] nArray; // you can't do this now
    nArray = aux;
    cout << endl << "  --->After reinitializing nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl << endl;
    for (int i = 0; i < arraySize + 2; i++)
    {
        cout << "  nArray[" << i << "] = " << nArray[i] << " at address <" << nArray + i << ">" << endl;
    }
    // . . . and also here.
    cout << endl << "  --->Getting ready to close down the program." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    // Wait for user input to close program when debugging.
    cin.get();
    return 0;
}
//--end of main program-------------
//----------------------------------

//**开始#包括文件************
#include//提供对cin和cout的访问
//--结束#包含文件-----------
//----------------------------------
使用名称空间std；
//----------------------------------
//**开始全局常量**********
常数int arraySize=5；
//--全局常数结束---------
//----------------------------------
//**开始主程序**************
int main（）
{
int reserved[arraySize+2]；//预先分配足够的内存
cout当您使用动态内存分配时，您不控制所分配内存的地址。这是由内存分配器的实现控制的。为什么您会在意呢？通常没有办法也没有理由这样做。您无法控制
new
返回的内容。这是家庭作业吗？您确定是吗我们不应该只添加几个
delete
语句？这是家庭作业@johnnympp有注释掉的行，但我不知道该怎么做如果这是家庭作业，那么你就误解了作业是什么。也许你被要求使用相同的指针变量（与重新分配的动态内存不同，它将保持在相同的地址）。代码的外观并不重要。不能将数组大小调整为更大的大小，也不能保证获得相同的地址—简单明了。实现这种效果的唯一方法是编写一个保留内存用作“能力"，但在逻辑上保留可使用的实际项目数，类似于
std:：vector
。但即使如此，
std:：vector
也不能保证在调整其大小大于容量时使用相同的指针。当我将其包含在注释行中时，出现了一个异常，该行似乎正常工作，我现在有3个位置！因此，ge其他的位置匹配，我不太确定如何做。这是我的第一个C++类“我现在有3个位置！”你指的是“位置”。？抱歉，在图片中，我需要8个内存地址才能相同。我在中输入了您的代码，现在8个内存地址中有5个。重新初始化后，我得到了不同的地址。我编辑了我的代码，以显示我将您的代码@AdrianColomitchiNope放置在何处，这是无法完成的。我们不保证，无论发生什么情况，在重新定位后，您将获得同一个地址。我的教授让他们都是一样的，所以我不知道他做了什么。谢谢你帮我靠近。
// 1,
int* aux=new int[arraySize+2];
// 2.
// deliberately simple here
for(size_t i=0; i<arraySize; i++) {
  aux[i]=nArray[i];
}
// 3.
delete[] nArray; // the entire memory occupied bu nArray is recycled
// 4.
nArray=aux; // make nArray point to the newly allocated chunck

// supplementary, adjust the arraySize, as it is now larger by 2
// scratch that, the rest of the code works afterwards using arraySize + 2
// arraySize += 2;

//**begin #include files************
#include <iostream> // provides access to cin and cout

//--end of #include files-----------
//----------------------------------

using namespace std;
//----------------------------------

//**begin global constants**********
const int arraySize = 5;
//--end of global constants---------
//----------------------------------


//**begin main program**************
int main()
{
    int reserved[arraySize+2]; // pre allocated enough memory

    cout << endl << endl;
    int* nArray = new (reserved) int[arraySize]; // placement new place nArray at "reserved" location
    cout << "  --->After creating and allocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    for (int i = 0; i < arraySize; i++)
    {
        nArray[i] = i*i;
    }
    cout << "  --->After initializing nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl << endl;
    for (int i = 0; i < arraySize; i++)
    {
        cout << "  nArray[" << i << "] = " << nArray[i] << " at address <" << nArray + i << ">" << endl;
    }
    // You'll need a command here to fix the memory leak
    // Well, not now.
    cout << endl << "  --->Before reallocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << endl;
    int* aux = new (reserved) int[arraySize + 2]; // and again, placement new place aux at "reserved" location
    cout << dec << "  --->After reallocating memory for nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    for (int i = 0; i<arraySize; i++) {
        aux[i] = nArray[i];
    }
    //delete[] nArray; // you can't do this now
    nArray = aux;
    cout << endl << "  --->After reinitializing nArray." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl << endl;
    for (int i = 0; i < arraySize + 2; i++)
    {
        cout << "  nArray[" << i << "] = " << nArray[i] << " at address <" << nArray + i << ">" << endl;
    }
    // . . . and also here.
    cout << endl << "  --->Getting ready to close down the program." << endl;
    cout << "  nArray address is <" << nArray << "> and contains the value " << hex << *nArray << dec << endl;
    // Wait for user input to close program when debugging.
    cin.get();
    return 0;
}
//--end of main program-------------
//----------------------------------