List test program
Type char 0-A for one of the following options:
0: Init,
1: Actualize,
2: Insert_First,
3: First,
4: Copy_First,
5: Delete_First,
6: Post_Delete,
7: Post_Insert,
8: Copy,
9: Succ,
A: Is_Active,
M: Print menu
CTRL+Z (Win) or CTRL+D (Unix): END
Your choice=1
Actualize - Rewrites the data of an active item
Please enter name: Enter age, weight and height (separated by Enter):
Active item:
NULL
Content of List:

Type char 0-A, EOF(tj. CTRL+Z nebo CTRL+D)=Konec, M=Menu:
************************************************************
Your choice=7
Post_Insert - Insert new item after the active one
Please enter name: Enter age, weight and height (separated by Enter):
Active item:
NULL
Content of List:

Type char 0-A, EOF(tj. CTRL+Z nebo CTRL+D)=Konec, M=Menu:
************************************************************
Your choice=8
Copy - Gets the values of the active item 
Active item:
NULL
Content of List:

Type char 0-A, EOF(tj. CTRL+Z nebo CTRL+D)=Konec, M=Menu:
************************************************************
End of file, finishing.
