c++ - DirectX D3DXVec3Normalize unresolved external symbol -

i have simple directx project:

#include <d3dx10.h> #include <d3dx10math.h>  #pragma comment(lib, "d3d10.lib") #pragma comment(lib, "d3dx10.lib")  int main() {     d3dxvector3 u(1.0f, 2.0f, 3.0f);     d3dxvector3 v(2.0f, 1.0f, 3.0f);     d3dxvector3 a, b, c, d, e;      float l = d3dxvec3length(&u);     float s = d3dxvec3dot(&u, &v);      d3dxvec3normalize(&d, &u); // <- problem here      return 0;  } 

i added include , lib directories in project properties , works fine, except d3dxvec3normalize line. when run program says: "error lnk2019: unresolved external symbol _d3dxvec3normalize@8 referenced in function _main".

can explain why d3dxvec3length , d3dxvec3dot functions work ok (without normalize line) , d3dxvec3normalize produces error?

p.s. use directx sdk june 2010 , visual studio 2012.

the linker error means code fine, did not provide location of d3dxvec3normalize function, library actual function resides.

msdn suggests it's d3dx9.lib, add code:

#pragma comment(lib, "d3dx9.lib") // can supposedly d3dx10.lib