linked list in C II

@Durga, few corrections.

The declaration that you have done is declaration of a new data type and not a variable (as you are using typedef). Also it has some syntax errors.

If we have to define a struct x which contains variable var_y of another struct y which itself contains a variable int z, then the declaration will look like:

struct x {
  struct y {
    int z;
  } var_y;
};

or

struct y {
   int z;
};
 
struct x {
  struct y var_y;
};

The point to note in first case is that if you declare only struct and not a variable of that struct, compiler will throw a warning that the declaration does not declare anything. Also logically such declaration does not make sense.

A variable of struct x can be declared as:

struct x var_x;

And the internal variable z can be accessed as:
var_x.var_y.z.

Please refer below example for the details specified above:

#include "stdio.h"

struct x {
  struct y {
    int z;
  } var_y;
};

int main() {
  struct x var_x = { 0 };
  printf("z = %d\n", var_x.var_y.z);
  return 0;
}

-Pradeep

ahem!Thanks!
My deadline has passed for project and I am not done with it, I submitted a project which is 80% done. Planning to resume it in holidays as a learning program, so I will pop up with many such syntax related questions 😉

thanks again