C++中给二维指针分配内存(实现代码)

时间：2021-12-27 11:17:21 | 栏目：C代码 | 点击：次

原理就不写在这里了，毕竟网上的介绍有很多，代码如下所示：

复制代码代码如下:

#include <iostream>
using namespace std;

#define N 5
#define M 10

int main(int argc, char **argv)
{
int **p;
int i,j;

p = new int* [N];
for (i = 0; i < N; i++)
p[i] = new int [M];

for (i = 0; i < N; i++)
for (j = 0; j < M; j++)
p[i][j] = i + j;

for (i = 0; i < N; i++)
{
  for (j = 0; j < M; j++)
  {
   cout<<"["<<p[i][j]<<"]"<<" ";
   cout<<*(*(p + i) + j)<<" "<<endl;
  }
  cout<<endl;
}

for (i = 0; i < N; i++)
{
delete [] p[i];
p[i] = NULL;
}

delete [] p;
p = NULL;

return 0;
}

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