Question

Not any homework, but seem to have got lost while doing basics, hence asking.

Say I have 2 C source files. 1.c & 2.c

2.c is as follows:

typedef struct mystr_
{
    int a;
    float b;
}mystr;

void fun()
{
    mystr q;

    some code....
}

And 1.c is as below:

#include "stdio.h"

void fun();


main()
{
    //How to access / declare a variable of type mystr here.

    mystr *v1;//This obviously gives compiler errors

      some code....    

}

How to access the structure mystr defined in 2.c from file 1.c to have variables of that struct type there?

EDIT:

Sorry forgot to mention in OP. I cannot move the declaration out in a header file for some reason –> It is a quick hack that I am trying to check in a existing code. Then is there any way to access it directly from the other source file?

Answer 1

Use headers.

Create a file 2.h

typedef struct mystr_
{
    int a;
    float b;
}mystr;

And include it in 1.c

#include "2.h"
#include "stdio.h"

void void fun();

EDIT:
Because you are not able to extract the declaration into a header file and include it, there is no other way than copying the declaration. This is a highly fragile construct, quick but mainly dirty and not really recommended unless you are out of other options.