objective c - Expected identifier or '(' before '.' token -

i'm new objective-c i'm using book grips it. i'm @ bit it's explaining structs , can't life of me them work.

i have following code:

int main (int argc, char *argv[]) {      struct node     {         int nodeid;         int x;         int y;         bool isactive;     };      typedef struct node mynode;      mynode.nodeid = 1;  } 

and i'm getting error written in title. every time search error online found different variations such 'before '>' token' or 'before '}' token' can't find '.' token , it's frustrating , assume it's somethings ridiculously trivial , basic. appreciated.

i believe you're trying modify actual type itself. nodea type of struct, int. need nodea mynode, able perform mynode.nodeid = 1 without error.