c中的struct内的struct

Question

I want to access a struct within a struct, does anyone know how?

EDIT:

typedef struct{
    int a, b;
} struct_1;

typedef struct{
    int c;
    struct_1 exemple;
} struct_2;
struct_2 Table[100];

Here for example I want to assign a value to Table[0].exemple.a

Thank you. EDIT: wow im such a dumba.. sometimes it was working iits just that my print was printing 100 times whereas I had just 6 entries so I just had to look up on the print thanks anyway

Answer 1

Exactly like your example:

Table[0].exemple.a = 12;

I think your problem is that exemple is struct_2 in your example, and not struct_1 like it appears you intended. Try this on for size (with corrected spelling):

typedef struct{
  int a, b;
} struct_1;

typedef struct{
  int c;
  struct_1 example;
} struct_2;
struct_1 Table[100];

Answer 2

With nested structs you continue to access the properties until you reach what you are looking for like so:

Table[0].example.a = 5;
Table[0].example.b = 10;

Answer 3

I think you probably meant:

typedef struct{
    int c;
    struct_1 exemple; /* see how it's struct_1 */
} struct_2;

and not

typedef struct{
    int c;
    struct_2 exemple;
} struct_2;

Since struct_2 doesn't have an a field.

After this, Table[0].exemple.a = 5 , should work, for example.

Answer 4

Your declaration of struct_2 looks wrong. Replace struct_2 exemple; with struct_1 exemple; . To access data inside the structure, use the . operator or the -> operator if you are using pointers.