delete[]运算符用于删除数组。delete运算符用于删除非数组对象。它叫operator delete[]和operator delete函数分别删除数组或非数组对象在(最终)调用数组元素或非数组对象的析构函数后占用的内存。

以下是关系：

typedef int array_type[1];

// create and destroy a int[1]
array_type *a = new array_type;
delete [] a;

// create and destroy an int
int *b = new int;
delete b;

// create and destroy an int[1]
int *c = new int[1];
delete[] c;

// create and destroy an int[1][2]
int (*d)[2] = new int[1][2];
delete [] d;