const int MAX_CHAR = 128;                                                                           struct Student                                                                                      {                                                                                                    char name[MAX_CHAR];                                                                                char sex[MAX_CHAR];                                                                                  unsigned int age;                                                                                  char addr[MAX_CHAR];                                                                               };                                                                                                  请问上面第一行的 常量 整数型 被赋值128 跟下面的名为学生的结构体有什么关联呢 麻烦详细解释下这段代码的意思 新人对编程感兴趣 望求教