Kyle and i are going fishing early Saturday morning
What does struct mean in in
"struct" is not a word.
Yes: only completely defined structured can be included (that doesn't include the actual structure itself). Example: struct a; struct b { int b1; }; struct c { struct a; /* BAD */ struct b; /* OK */ struct c; /* BAD */ };
typedef struct ListNode {struct ListNode *next;anytype data;} ListNode;typedef struct BiListNode {struct BiListNode *next;struct BiListNode *prev;anytype data;} BiListNode;
yes. struct a { int x; int y; } struct b{ int z; struct a w; }
Actually, there is a third step, call definition. Declaration is a statement to the compiler of what type an identifier is, definition is the allocation of memory for that identifier, and initialization is the assignment of an initial value to that identifier. Usually, declaration and definition are done together, but you can also add initialization in that step if desired. int a; /* declaration and definition */ a = 1; /* initialization */ int a = 1; /* declaration, definition, and initialization */ For the case of seperate declaration and definition, consider the struct... struct _mystruct { int a; }; /*declaration */ struct _mystruct mystruct; /* definition */ struct _mystruct { int a; } mystruct; /*declaration and definition */ Note: To be more precise: struct _mystruct; /* struct declaration */ struct _mystruct { int a; }; /* struct definition */ typedef struct _mystruct MYTYPE; /* type definition */ extern struct _mystruct mystructvar; /* variable declaration */ struct _mystruct mystructvar; /* variable definition */ struct _mystruct mystructvar = {7} ; /* variable definition with initialization */ struct _mystruct { int a; } mystruct; /* struct definition and variable definition */ extern struct _mystruct { int a; } mystruct; /* struct definition and variable declaration */
struct base1 { // ... }; struct base2 { // ... }; struct derived1 : public base1 // single inheritance { // ... }; struct derived2 : public base1, public base2 // multiple inheritance { // ... };
Yes, it is quite common. Example: struct List { struct List *Next; int value; } typedef struct List List; Example2: typedef struct Tree Tree; struct Tree { Tree *left,*right; int value; };
Create a pointer of the type (pointer to struct) and assign the address of an instance of the structure to your pointer: typedef struct x { /* ... */ }; struct x my_structure; struct x* ptr = &my_structure;
Hacking
Array is not a struct. Array only has one datatype, struct has arbitrary different datatypes.
struct outer { int n; char *s; struct { int m; char *q; } inner; }; struct outer x; x.n= 1; x.inner.m = 2;