type *p = new type [N]

type *p1;
p1 = new type [N];

delete[] p1; 

type (*p)[N] = new type [][N]

int **p;
p = new int *[5];   //建立一個指標陣列，每個元素都是一個指標
for (int i = 0; i < 5; i++)
{
    p[i] = new int[3];//每一個指標陣列中的元素指標都指向一個3個元素的陣列
}
 

for (int i = 0; i < 5; i++)
{
     delete[] p[i];
}
delete[] p;

include "iostream"
include "ctime"
using namespace std;
int main()
{
    int row, col;
    int i, j;
    srand((unsigned)time(NULL));
    cout << "輸入二維陣列的行，列：";
    cin >> row >> col;
    //動態定義二維陣列
    int **p2;
    p2 = new int*[row];
    for (i = 0; i < row; i++)
    {
        p2[i] = new int[col];
    }
    //陣列賦值
    for (i = 0; i < row; i++)
    {
        for (j = 0; j < col; j++)
        {
            p2[i][j] = rand() % 10;
        }
    }
    //輸出陣列
    for (i = 0; i < row; i++)
    {
        for (j = 0; j < col; j++)
        {
            cout << p2[i][j] << '\t';
        }
        cout << endl;
    }
    //釋放二維陣列
    for (i = 0; i < row; i++)
    {
        delete[] p2[i];
    }
    delete[] p2;
}
 

和建立二維陣列一樣，只需要在新增第三個變數就能完成三維陣列的建立。

例項：建立一個動態的高height、行row、列col的三維陣列，並隨機賦值0-9

#include "iostream"
#include "ctime"
using namespace std;

int main()
{
    int hight, row, col;
    int i, j,k;
    srand((unsigned)time(NULL));
    cout << "輸入三維陣列高，行，列 : ";
    cin >> hight >> row >> col;
    //動態定義三維陣列：
    int *** p3;
    p3 = new int**[hight];
    for (i = 0; i < hight; i++)
        p3[i] = new int*[row];
    for (i = 0; i < hight; i++)
        for (j = 0; j < row; j++)
            p3[i][j] = new int[col];
    //輸入三維陣列值：
    for (i = 0; i < hight; i++)
        for (j = 0; j < row; j++)
            for (k = 0; k < col; k++)
                p3[i][j][k] = rand() % 10;
    //輸出三維陣列：
    cout << "輸出三維陣列" << endl;
    for (i = 0; i < hight; i++)
    {
        for (j = 0; j < row; j++)
        {
            for (k = 0; k < col; k++)
                cout << p3[i][j][k] << ' ';
            cout << endl;
        }
        cout << endl;
    }
    //釋放三維陣列
    for (i = 0; i < hight; i++)
        for (j = 0; j < row; j++)
            delete[]p3[i][j];
    for (i = 0; i < hight; i++)
        delete[]p3[i];
    delete[]p3;

}
 

原文轉載自:http://blog.csdn.net/liuqi605752176/article/details/52678308 特表感謝