linked list in C II

Replies

• 

  pradeep_agrawal

  @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
• 

  durga ch

  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