比如int a[rows][cols]
int **a =new int*[rows];
for(int i=0;i<rows;i++){
a[i]=new int[cols];
for(int j=0;j<cols;j++){
a[i][j]=i;
}
}
for(int i=0;i<rows;i++){
delete[] (int*)a[i];
}
delete[] a;
比如int a[rows][cols]
int **a =new int*[rows];
for(int i=0;i<rows;i++){
a[i]=new int[cols];
for(int j=0;j<cols;j++){
a[i][j]=i;
}
}
for(int i=0;i<rows;i++){
delete[] (int*)a[i];
}
delete[] a;