Generate delaunay triangulation from 3D(x,y,z) points

I have 3D Points array.each 3D point have x,y,z data. I want to generate delaunay triangulation.I am new in delaunay triangulation. My array as below.

-256.24 85.35 5.0

-262.24 84.35 15.0

-263.24 87.35 25.0

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I am working in c++ with Visual studio IDE. I want to generate indexes of triangulation. As well as array of triangles points.