①指针:
int **p;
p = new int*[10];
for(int i = 0; i < 10; ++i)
{
p[i] = new int[5];
}
②vector
vector<vector<int>> p(10,vector<int>(5,0));
①指针:
int **p;
p = new int*[10];
for(int i = 0; i < 10; ++i)
{
p[i] = new int[5];
}
②vector
vector<vector<int>> p(10,vector<int>(5,0));