c - structure within structure declared in a file not able to access inner structure -


i have created file msgbuf.h follows:

//msgbuf.h typedef struct msgbuf1 {     long    mtype;     m1      *m; } message_buf;  typedef struct msgclient {     int msglen;     int msgtype;     char cp[100]; }m1;

and program check.c. below prog giving error there no m1. why so? mistake doing? think contents of file "msgbuf.h" should copied in prog check.c , program should run fine. please let me know this.

//check.c #include<stdio.h> #include<string.h> #include<stdlib.h> #include"msgbuf.h"  int main() {     message_buf *sbuf;     sbuf=malloc(sizeof(sbuf));     sbuf->m=malloc(sizeof(m1));     sbuf->m->msglen=10;     printf("\n%d",sbuf->m->msglen);     printf("\n %d",sizeof(sbuf->m));     return 0; }

thanks :)

simple, declare m1 before message_buf; .

typedef struct msgclient {     int msglen;     int msgtype;     char cp[100]; }m1;  typedef struct msgbuf1 {     long    mtype;     m1      *m; } message_buf;

and read keltar's comments below question too.


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