Question

C++ 中如何动态创建数组？

Answer 1

有动态的和静态的
new/delete
malloc/free

例如：
分配内存
int **a = new int* [lenth];
for(int i = 0; i < lenth; ++i)
a[i] = new int [lenth];

释放内存：
for(int i = 0; i < lenth; ++i)
delete []a[i];
delete []a;