title: Doing the dynamic library tutorial but I have LNK2019 errors
body: <p>The tutorial I'm doing is this one :</p>
  
  <p><a href="https://msdn.microsoft.com/en-us/library/ms235636%28v=vs.100%29.aspx" rel="nofollow">https://msdn.microsoft.com/en-us/library/ms235636%28v=vs.100%29.aspx</a></p>
  
  <p>I have vs2010 and I'm compiling everything in debug in win32. I'm pretty sure I've followed every instruction step by step. I can even find the function automatically with vs2010, but I cannot build the main project (the dll is fine)</p>
  
  <p>I get the same error as the guy in the comment, which is : </p>
  
  <blockquote>
    <p>1>MyExecRefsDll.obj : error LNK2019: unresolved external symbol
    "public: static double __cdecl
    MathFuncs::MyMathFuncs::Divide(double,double)"
    (?Divide@MyMathFuncs@MathFuncs@@SANNN@Z) referenced in function _main</p>
    
    <p>1>MyExecRefsDll.obj : error LNK2019: unresolved external symbol
    "public: static double __cdecl
    MathFuncs::MyMathFuncs::Multiply(double,double)"
    (?Multiply@MyMathFuncs@MathFuncs@@SANNN@Z) referenced in function
    _main</p>
    
    <p>1>MyExecRefsDll.obj : error LNK2019: unresolved external symbol
    "public: static double __cdecl
    MathFuncs::MyMathFuncs::Subtract(double,double)"
    (?Subtract@MyMathFuncs@MathFuncs@@SANNN@Z) referenced in function
    _main</p>
    
    <p>1>MyExecRefsDll.obj : error LNK2019: unresolved external symbol
    "public: static double __cdecl
    MathFuncs::MyMathFuncs::Add(double,double)"
    (?Add@MyMathFuncs@MathFuncs@@SANNN@Z) referenced in function _main</p>
  </blockquote>
  
  <p>Thank you!</p>