recvmsg和recvit函数初始化各种数组和结构，将接收的数据从内核发送到进程。
The recvmsg and recvit functions initialize various arrays and structures to send the received data to the process from the kernel.
动态分配数组时，如果数组元素具有类类型，将使用该类的默认构造函数（ 第2.3.4节）实现初始化；
When we allocate an array of objects of a class type, then that type's default constructor ( Section 2.3.4, p. 50) is used to initialize each element.
其中第一个数组是string类型，分配了保存对象的内存空间后，将调用string类型的默认构造函数依次初始化数组中的每个元素。
In the first case, those objects are strings. After allocating memory to hold the objects, the default string constructor is run on each element of the array in turn.
其中第一个数组是string类型，分配了保存对象的内存空间后，将调用string类型的默认构造函数依次初始化数组中的每个元素。
In the first case, those objects are strings. After allocating memory to hold the objects, the default string constructor is run on each element of the array in turn.
应用推荐