error LNK2005问题，小弟实在无能为力!!!0

代码部分:

// function.h: interface for the function class.

//接口函数类//

#ifndef AFX_FUNCTION_H__6E194843_FEB3_491F_8062_765AA3465CBC__INCLUDED_

#define AFX_FUNCTION_H__6E194843_FEB3_491F_8062_765AA3465CBC__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

#include "Dib.h"#include

// 常数π#define pi 3.1415926535

#define WIDTHBYTES(bits) (((bits) + 31) / 32 * 4)

#include

#include

using namespace std;

#define PI 3.14159265358979323846

typedef struct

{ int Value;

int Dist;

int AngleNumber;

} MaxValue;

struct CplexNum

{ double re;

double im;

};

/

//用于复数运算

CplexNum Add(CplexNum c1,CplexNum c2)

{ CplexNum c;

c.re=c1.re+c2.re;

c.im=c1.im+c2.im;

return c;

}

CplexNum Sub(CplexNum c1,CplexNum c2)

{ CplexNum c;

c.re=c1.re-c2.re;

c.im=c1.im-c2.im;

return c;

}

CplexNum Mul(CplexNum c1,CplexNum c2)

{ CplexNum c;

c.re=c1.re*c2.re-c1.im*c2.im;

c.im=c1.re*c2.im+c2.re*c1.im;

return c;

}

编译环境报错:

StdAfx.obj : error LNK2005: "struct CplexNum __cdecl Add(struct CplexNum,struct CplexNum)" (?Add@@YA?AUCplexNum@@U1@0@Z) already defined in MyTsetView.obj

StdAfx.obj : error LNK2005: "struct CplexNum __cdecl Sub(struct CplexNum,struct CplexNum)" (?Sub@@YA?AUCplexNum@@U1@0@Z) already defined in MyTsetView.obj

StdAfx.obj : error LNK2005: "struct CplexNum __cdecl Mul(struct CplexNum,struct CplexNum)" (?Mul@@YA?AUCplexNum@@U1@0@Z) already defined in MyTsetView.obj

StdAfx.obj : error LNK2005: "void __cdecl FastFourierTran(struct CplexNum *,struct CplexNum *,int)" (?FastFourierTran@@YAXPAUCplexNum@@0H@Z) already defined in MyTsetView.obj

StdAfx.obj : error LNK2005: "void __cdecl Fourier(struct CplexNum *,int,int,struct CplexNum *)" (?Fourier@@YAXPAUCplexNum@@HH0@Z) already defined in MyTsetView.obj

Debug/MyTset.exe : fatal error LNK1169: one or more multiply defined symbols found执行 link.exe 时出错.

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