int * p = new int[20];

把P赋成数组

delete[ ]p;

才能delete掉new[ ]p出来的shu'z

new创建数组

#include <iostream>

using namespace std;

int main()

{

//int a[]{ 3,12,312,31,2312,3,12,3,8,65 };

//cout << a << endl; // 006FFB7C

//cout << *a << endl;// 3

//cout << *(a + 1) << endl; // 12

//cout << *(a + 4) << endl; // 2312

//*(a + 1) = 1000;

//cout << a[1] << endl; // 1000

int* p = new int[20];

p[0] = 90;

cout << p[0] << endl; // 90

*(p + 2) = 80;

cout << *(p + 2) << endl; // 80

delete[] p; // 笔记：释放new的数组

return 0;

}

利用new来创建数组；

int main ()

{

   int *p=new int[20];

p[0]=20;

cout<<p[0];

*(p+2)=80;

delete[] p;

}

delete p;

delete[]p;