C + + struct pointers and doubly linked lists

? Structure pointers-dynamically allocating memory for structure pointers? Structure in a structure? A doubly linked list? structure pointerstructMyTime {//Char name[256];         intHour//when         intMin//points         intSec//seconds     }; structStu_data {Charname[ the];//Student Name         structMyTime Stutime;//sign -in time     }  ; structStu_data *stu;//int *pi;? Dynamically allocating memory stu for structures=malloc(sizeof(structStu_data));//256+12=268structure in the structurestructStu_data {Charname[ the];//Student Name         structMyTime {//Char name[256];             intHour//when             intMin//points             intSec//seconds} stutime;//sign -in time     }  ; structMyTime T2; structStu_data *Stu;? The doubly linked list is a non-sequential, non-sequential storage structure on a physical storage unit, and the logical order of the data elements is implemented by the order of the pointers in the linked list. A linked list consists of a series of nodes (each element in the list is called a node) that can be dynamically generated at run time. Each node consists of two parts: one is the data field that stores the data element, and the other is the pointer field that stores the next node address.      The list is easier to insert and delete than the linear table order structure. structMyTime {//Char name[256];         intHour//when         intMin//points         intSec//seconds     }; structStu_data {Charname[ the];//Student Name         structMyTime Stutime;//sign -in time         structStu_data* Front;//point to a previous node         structStu_data* back;//point to the next node     }  ; Stu=malloc(sizeof(structStu_data));//256+12=268 1Front backname Stutime ... Additional Data NULL22name Stutime ... Other data1    33name Stutime ... Other data2    44name Stutime ... Other data3xxxxname Stutime ... Other data4    0x00411180x0041118name Stutime ... Other data xx NULL

C + + struct pointers and doubly linked lists