C++和Fortran混合编程时cpp文件调用数学函数的问题

------------------------------file:a.cpp-------------

#include <iostream.h>

#include <math.h>

extern "C"

{

void _stdcall TESTA(int *);

}

void main()

{

double a = sin(1.00);

cout<<"a="<<a;

int ii=1;

TESTA(&ii);

}

------------------------------file:b.f-------------

SUBROUTINE TESTA(IA)

WRITE(*,*) "IA=", IA

RETURN

END

编译提示错误：

Linking...

dfor.lib(matherr.obj) : error LNK2005: __matherr already defined in LIBCD.lib(matherr.obj)

LINK : warning LNK4098: defaultlib "libc.lib" conflicts with use of other libs; use /NODEFAULTLIB:library

Debug/StaggeredGrid.exe : fatal error LNK1169: one or more multiply defined symbols found

Error executing link.exe.

经过分析发现是因为在main函数里面调用了sin数学函数，解决的方法是添加文件头：

#pragma comment (lib, "dfor")