动态生成一维数组和二维数组

#include <iostream>
#include <time.h>
#include <windows.h>
using namespace std;

//动态申请内存,实现一维数组
void oneDimensionalArray(int n)
{
    int *num = new int(n);
    srand(time(NULL));
    for(int i = 0; i < n;i++)
    {
        num[i] = rand()%100;
    }

    for(int i = 0; i < n;i++)
    {
        cout<<num[i]<<"  ";
    }

    delete []num; //记得删除
    num = NULL;
    cout<<endl;
}

void twoDimensionalArray(int row, int low)
{
    int **array;
    array = new int*[row];

    for(int i = 0; i < row; i++)
    {
        array[i] = new int[low];
    }

    for(int i = 0; i < row; i++)
    {
        for(int j = 0; j < low; j++)
        {
            array[i][j] = rand()%100;
        }
    }

    for(int i = 0; i < row; i++)
    {
        for(int j = 0; j < low; j++)
        {

            cout<<array[i][j]<<" "; 
            if(j +1 == low)
            {
                cout<<endl;
            }
        }
    }

    //删除
    for (int i = 0; i < row; i++)
    {
        delete[] array[i];
        array[i] = NULL;
    }
    delete []array;
    array = NULL;

}


int main(int argc, char const *argv[])
{
    //动态实现一维数组
    int num;
    cin>>num;
    oneDimensionalArray(num);
    

    //动态实现二维数组
    int row, low;
    cin>>row>>low;
    twoDimensionalArray(row, low);

    return 0;
}