Thread: Oy my head hurts. More confusion in this, any help?

Here's a code I'm reading from a tutorial, and I'm trying to make my own program while learning from this. I try to compile this, and I get errors:

#include <stdio.h>
#include <stdlib.h>

struct person {
char name [20];
struct person *next;
};
struct person *new;
struct person *head;
head = NULL;
main()
{
new = (person*)malloc (sizeof(struct person));
new->next = head;
head = new;
}


The errors are:

Error c:\tc\test.c 10: Declaration needs type or storage class
Error c:\tc\test.c 10: Type mismatch in redeclaration of 'head'
Error c:\tc\test.c 13: Undefined symbol 'person' in function main
Error c:\tc\test.c 13: Expression syntax in function main
*** 4 errors in Compile ***

Any advice? This code was written by the book I'm reading.

Yeah I figured not to use new as a variable when I was writing mine, but this one was written by the book I'm reading. heh

So when using structures as data types, you have to tell the compiler that it's a strucure? LIke struct bobdole *pointer, not just bobdole *pointer;?

Interesting.

Hey it worked!!! You guys are the bomb diggity!!!

Wooyah

So when using structures as data types, you have to tell the compiler that it's a strucure? LIke struct bobdole *pointer, not just bobdole *pointer;?

Yes. The type is "struct bobdole", if you would use "bobdole" only, you need the keyword typedef, this enables you to define you're own types. Like:

typedef struct bobdole bobdole_s;

Now you can do such like this:

bobdole_s variable;