Thread: help me with C codes

I have the following struct defined:

Code:

typedef struct FrameHdr {
    u_char	type;		/* SSWP_DATA or SSWP_ACK */
    SeqNum	seq;		/* sequence number */
    u_char	size;		/* size of payload */
    u_char	flags;		/* see below */
} FrameHdr;


typedef struct Frame {
    FrameHdr	hdr;		/* Frame header */
    u_char	body[256];	/* Body */
} Frame;

and in my .c file I have the following:

Code:

Frame frame;
frame.hdr.size = ....;
frame.hdr.type = ....;
frame.hdr.seq = ....;

however I got these errors:

sender.c:180: error: âFrameHdrâ has no member named âtypeâ
sender.c:181: error: âFrameHdrâ has no member named âseqâ
sender.c:181: error: âFrameHdrâ has no member named âsizeâ

what am I doing wrong here?

Looks fine to me. Are you sure that the structs you have shown are within the scope of the function you are trying to work with?

the structs are declared on another .h file which I already included in the header of the .c file,. I also tried the following alternative, but it doesn't work as well

Code:

Frame* frame = (Frame*) malloc(sizeof(Frame));
frame->hdr->type = TYPE_DATA;
frame->hdr->seq = (SeqNum) LFS;
frame->hdr->size = 0;