CODEWITHSUNDEEP
c++cvisual-studio
make
make

Reputation: 775

how to solve the compiling error C2079 on windows

could someone please help to solve this error :

test.cpp(14) : error C2079: 'x1' uses undefined struct 'x'
test.cpp(16) : error C2228: left of '.x_x1' must have class/struct/union type

here is a part of the code:

  struct  x  x1;
  ...
  x1.x_x1=y_x1;

On unix, the program is compiling and linking without errors. Thanks for your help ,

Upvotes: 2

Views: 5478

Answers (1)

Kashyap
Kashyap

Reputation: 17411

With just a forward declaration, you can only define a pointer or a reference to the struct, you can't access the members (x1.x_x1) of a struct.

Include the full definition of the struct if you want to access members.

E.g. following would work:

struct x {
  int x_x1;
};

struct  x  x1;
  ...
x1.x_x1=y_x1;

// or

#include "struct_x.h"
struct  x  x1;
  ...
x1.x_x1=y_x1;

where struct_x.h has:

struct x {
  int x_x1;
};

Upvotes: 1

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