Arduino: struct pointer as function parameter

The code below gives the error:

sketch_jul05a:2: error: variable or field 'func' declared void

So my question is: how can I pass a pointer to a struct as a function parameter?Code:

typedef struct
{ int a,b;
} Struc;

void func(Struc *p) {  }

void setup() {Struc s;func(&s);}void loop(){}

The problem is, that the Arduino-IDE auto-translates this into C like this:

#line 1 "sketch_jul05a.ino"#include "Arduino.h"void func(Struc *p);void setup();void loop();#line 1typedef struct
{ int a,b;
} Struc;void func(Struc *p) {  }void setup() {Struc s;func(&s);}void loop(){}

Which means

Struc

is used in the declaration of

func

before

Struc

is known to the C compiler.[/code]Solution: Move the definition of

Struc

into another header file and include this.Main sketch:

#include "datastructures.h"void func(Struc *p) {  }void setup() {Struc s;func(&s);}void loop(){}

and

datastructures.h

:

struct Struc{ int a,b;};

The answer above works. In the meantime I had found the following also to work, without the need for a .h file:

typedef struct MyStruc{ int a,b;} Struc;void func(struct MyStruc *p) {  }void setup() {Struc s;func(&s);}

void loop(){}

Be warned: Arduino coding is a little flaky. Many of the libraries are also a bit flaky!see：http://stackoverflow.com/questions/17493354/arduino-struct-pointer-as-function-parameter