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//file1.c
#include <stdio.h>
#include "file.h"

static int A = 3;
void main() {
  f();
}

//file.h Í·Îļþ

#ifndef _FILE_H
#define _FILE_H

extern int A;

void f() {
printf("%d", A*3);
}

#endif




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static int A = 3;

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