list
....\doudle
....\......\teacher-bouble-loop-nohead
....\......\..........................\a.out
....\......\..........................\list.c
....\......\..........................\list.h
....\......\..........................\main
....\......\..........................\main.c
....\......\..........................\Makefile
....\......\teacher-double-nohead-noloop
....\......\............................\girl.data
....\......\............................\list.c
....\......\............................\list.h
....\......\............................\main
....\......\............................\main.c
....\......\............................\Makefile
....\single
....\......\my-single-noloop-nohead
....\......\.......................\list.c
....\......\.......................\list.h
....\......\.......................\main
....\......\.......................\main.c
....\......\.......................\Makefile
....\......\teacher-single-loop-nohead
....\......\..........................\list.c
....\......\..........................\list.h
....\......\..........................\main
....\......\..........................\main.c
....\......\..........................\Makefile
....\......\teacher-single-nohead-noloop
....\......\............................\list.c
....\......\............................\list.h
....\......\............................\main
....\......\............................\main.c
....\......\............................\Makefile
....\......\teacher-single-noloop-nohead-OK
....\......\...............................\list.c
....\......\...............................\list.h
....\......\...............................\main
....\......\...............................\main.c
....\......\...............................\Makefile
....\......\...............................\man.data
....\......\...............................\man1.txt
....\......\...............................\q