STL：动态内存分配

参考文献《大道至简：C++STL》

• new/delete

#include 
#include 

using namespace std;

int main()
{
    int size;
    cin >> size;
    int * arr = new int[size];
    for(int i = 0; i < size; i++)
    {
        arr[i] = rand();
    }
    for(int i = 0; i < size; i++)
    {
        cout << arr[i] << " ";
    }
    cout << endl;
    delete[] arr;
    return 0;
}

• auto_ptr

#include 
#include 
#include 

using namespace std;

int main()
{
    auto_ptr str1(new string("okokok!"));
    auto_ptr str2(str1);
    auto_ptr str3(new string("str3"));
    cout << str1.get() << endl;     //0
    cout << str2.get() << endl;     //0x632270
    cout << str3.get() << endl;     //0x6322c0
    cout << *str2 << endl;
    cout << *str3 << endl;
    return 0;
}