Anonymous Struct Pointer [closed]

by

No, the sample code is not valid syntax. A compiling attempt will show that.

Re-writing into what it appears you are asking is the following example, you ask “how does one reference the (anonymous struct) pointer later in the program?”

int random_function(int random_variable) {
  // Supposed Anonymous Struct Pointer, but invalid syntax.
  struct struct_name *;  
}

It appears you are mixing what is anonymous. Your example hints that you think the structure has a name and the variable is anonymous, which if could happen would make it inaccessible.

A correct example of Anonymous Struct Pointer would be

int random_function(int random_variable) {
  struct /* no structure tag here */ {
    int a;
    int b;
  } *variable_name;
  variable_name = malloc(sizeof *variable_name);
  variable_name->a = 1;
  variable_name->a = 2;
  return variable_name->a;
}

Here you can see the structure has no tag, that makes it an anonymous structure. variable_name becomes a pointer to an anonymous structure . The variable is accessed in the usual ways.

More Related Contents:

  1. break statement doesn’t work in a loop [closed]
  2. How to assign a hexadecimal value to an unsigned char variable in a C program [closed]
  3. How to read these mixture of data in C
  4. Why malloc+memset is slower than calloc?
  5. makefile:4: *** missing separator. Stop
  6. Is it better to use C void arguments “void foo(void)” or not “void foo()”? [duplicate]
  7. Macro definition to determine big endian or little endian machine?
  8. Why does glibc’s strlen need to be so complicated to run quickly?
  9. Standard alternative to GCC’s ##__VA_ARGS__ trick?
  10. Mapping a numeric range onto another
  11. How are variable arguments implemented in gcc?
  12. How to get function’s name from function’s pointer in Linux kernel?
  13. When / How does Linux load shared libraries into address space?
  14. Is un-initialized integer always default to 0 in c?
  15. How to call C from Swift?
  16. Is it possible to determine the thread holding a mutex?
  17. Are empty macro definitions allowed in C? How do they behave?
  18. Reading a text file backwards in C
  19. Should one really set pointers to `NULL` after freeing them?
  20. shared global variables in C
  21. Return char[]/string from a function [duplicate]
  22. In C99, is f()+g() undefined or merely unspecified?
  23. Why changing value of SO_RCVBUF doesn’t work?
  24. Passing too many arguments to printf
  25. Is the sizeof(enum) == sizeof(int), always?
  26. What primitive data type is time_t? [duplicate]
  27. C: How to wrap a float to the interval [-pi, pi)
  28. Unix O_CREAT flag without mode specified
  29. C: Different implementation of clock() in Windows and other OS?
  30. & operator optional in function pointer assignment

Leave a Comment