CodeWarrior Development Toolsのトピックtypedef struct in events file

typedef struct in events file

Albert_mtb — Fri, 02 Feb 2024 08:54:04 GMT

in the file main.c, i define

typedef struct
{
unsigned char A;
unsigned char B;
unsigned char C;
}TDATA_EXAMPLE;
TDATA_EXAMPLE Data_examples;

In the file events.c i want to modify a parameter of struct but i don't know how declare (extern ... ?)

Data_examples.A = 1;

Alex_Wang — Sun, 04 Feb 2024 03:39:29 GMT

You can add the following code in event.c for external declaration:

typedef struct { unsigned char A; unsigned char B; unsigned char C; } TDATA_EXAMPLE; extern TDATA_EXAMPLE Data_examples;

You can also create a new header.h file to contain the TDATA_EXAMPLE struct definition by adding the following code to event.c:

#include "header.h" extern TDATA_EXAMPLE Data_examples;

header.h is as follows:

#ifndef __HEADER_H #define __HEADER_H typedef struct { unsigned char A; unsigned char B; unsigned char C; } TDATA_EXAMPLE; #endif

I recommend using header file definitions for large projects.

Best regards, Alex

Albert_mtb — Mon, 05 Feb 2024 07:38:48 GMT

Thank you so much Alex

Best regards