C++动态数组

 

#include <iostream>
 using namespace std;

 int main()
{
      int r;  //行数
       int c;  //列数
       cout<<"Please input the number of rows of the dynamic array: ";
      cin>>r;  //输入行数
       cout<<"Please input the number of columns of the dynamic array: ";
      cin>>c;  //输入列数
      //创建二维动态数组
       int **p=new int*[r];
      for(int i=0;i<r;i++)
      {
           p[i]=new int[r];
      }
      cout<<"The array named p["<<r<<"]["<<c<<"] is created."<<endl;
      //循环赋值
       int temp;
      for(int i=0;i<r;i++)
      {
           for(int j=0;j<c;j++)
           {
                 cout<<"Please input a value of p["<<i<<"]["<<j<<"] in the array: ";
                 cin>>temp;
                 *(*(p+i)+j)=temp;  //寻址赋值
            }
      }
      //循环显示
      cout<<"The dynamic array is "<<endl;
      for(int i=0;i<r;i++)
      {
           for(int j=0;j<c;j++)
           {
                 cout<<*(*(p+i)+j)<<" ";  //寻址读取
           }
           cout<<endl;
      }
      
      return 0;
}