Go4Expert - why do I get the error "conflicting types for..." ?

Go4Expert (http://www.go4expert.com/)

- C (http://www.go4expert.com/forumdisplay.php?f=20)

- - why do I get the error "conflicting types for..." ? (http://www.go4expert.com/showthread.php?t=26461)

why do I get the error "conflicting types for..." ?

This is my code. The types are identical as far as I can see... If anyone could point out the error I'd be grateful. By the way I'm trying to implement a very simple singly-linked list. Any comments or suggestions would are kindly welcomed. Thanks!

Code:

#include <stdio.h>

#include <stdlib.h>



//void list_insert (int k, struct node* head, struct node* curr);



int main()

{

    struct node

    {

        int numdata;

        struct node* next;

    };



    struct node* head;

    struct node* curr;

    head=NULL;

    curr=NULL;



    list_insert(1, head, curr);

    list_insert(2, head, curr);

    list_insert(3, head, curr);



    return 0;

}



void list_insert (int k, struct node* head, struct node* curr)

{

    curr->numdata=k;

    curr->next=head;

    head=curr;

}



void show_list(node* head)

{

    node* curr;

    curr=head;

    printf("\n");

    while(curr!=NULL)

        printf("%d ",curr->numdata);

    printf("end of list\n")

}

*****************
It says: "conflicting types for 'list_insert.' " Why?:(

Re: why do I get the error "conflicting types for..." ?

Well, you have declared Structure Node inside the main method so the declaration is visible only to the main method.
Rest of teh compiler doesn't know what a node is, so in order to use this in all the functions of your program just declare it out side the main block....and your problem should be solved.

Re: why do I get the error "conflicting types for..." ?

Also why is the prototype commented out? Without this the compiler will assume list_insert is defined

Code:

int list_insert();

so if you don't want that, use prototypes and DON'T comment them out.