struct qustion..

i wrote a simple struct
it says i got syntax error
i cant se my error here
??

Code:

---

typedef struct node{
    node *left;
    node *right;
    int data;

}node;

---

do you want the same name for the struct tag and its alias?

We've done this before. The name "node" does not exist until you get to the actual typedef at the bottom line. Until then you must use the actual name of the type, "struct node".

Yes, because node was not declared until after the struct was defined. Here are two solutions:

Code:

---

typedef struct node {
    struct node *left;
    struct node *right;
    int data;
} node;

---

Code:

---

typedef struct node node;

struct node {
    node *left;
    node *right;
    int data;
};

---

this is a combination of struct and typedef
instead writing struct node each time.

using this code i can write only "node"
which i wrote in the end.

Quote:

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Originally Posted by laserlight

Yes, because node was not declared until after the struct was defined. Here are two solutions:

Code:

---

typedef struct node {
    struct node *left;
    struct node *right;
    int data;
} node;

---

Code:

---

typedef struct node node;

struct node {
    node *left;
    node *right;
    int data;
};

---

---

ahhhh thanks

Quote:

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Originally Posted by transgalactic2

this is a combination of struct and typedef
instead writing struct node each time.

using this code i can write only "node"
which i wrote in the end.

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I was begining to wonder if u even read the previous post before i got to the bottom.

That's maybe two direction link list

This is my first post!

I‘'m from China and my English is bad……

Do you understand what I say??

Quote:

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Originally Posted by liyanhong

That's maybe two direction link list

This is my first post!

I‘'m from China and my English is bad……

Do you understand what I say??

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The structure is a binary tree node and I'm sure that transgalactic2 knows that too, since [s]he is working on a binary tree insertion function.

--
Mats

its HE
:)