重复定义的问题,工具keil 7.50

只看该作者 · 2007-1-18 10:59

//文件1
#include "xxdata.h"
void FUNC(void)
{
    ACC8--;
    ACC16++;
}

//文件2
#include "xxdata.h"
extern void FUNC(void);
void main(void)
{
  while(1)
  {
    ACC8++;
    ACC16--;
    FUNC();
  }
}

//头文件xxdata.h
#ifndef __xxdata_H__
#define __xxdata_H__

unsigned char ACC8;
unsigned int ACC16;

#endif
编译后：
*** ERROR L104: MULTIPLE PUBLIC DEFINITIONS
    SYMBOL:  ACC16
    MODULE:  func1.obj (FUNC1)
*** ERROR L104: MULTIPLE PUBLIC DEFINITIONS
    SYMBOL:  ACC8
    MODULE:  func1.obj (FUNC1)
why?????????