c++ - Adding another triangle -

trying de-engineer code received figure out how directx works. have triangle up, , have figured out how (change color, size, position..etc) except adding triangle. have read extensively on directxtutorial.com , think has vertices, awesome good, makes sense, can't work me!

to code below tried add more float2's no luck...

float2 trianglevertices[] = {     float2(-0.5f, 0.5f),     float2(0.0f, 3.5f),     float2(0.5f, -3.5f),      float2(-2.5f, 1.5f),     float2(2.0f, -3.5f),     float2(0.5f, 3.5f),   }; 

and tried (saw on 3d tutorial)

    float2 trianglevertices[] =     {         { float2(-0.5f, 0.5f), float2(0.0f, 3.5f), float2(0.5f, -3.5f),}         { float2(0.5f, -3.5f), float2(0.5f, -3.5f), float2(0.5f, -3.5f),`}      }; 

none of worked. appreciated, looking see doing wrong, , how create triangle. i'll post rest of code below:

        // create vertex , index buffers define simple triangle.          float2 trianglevertices[] =         {             float2(-0.5f, 0.5f),             float2(0.0f, 3.5f),             float2(0.5f, -3.5f),           };            unsigned short triangleindices[] =         {             4, 1, 2,           }; 

you need add both vertex , index, try below code.

float2 trianglevertices[] = {     float2(-0.5f, 0.5f),     float2(0.0f, 3.5f),     float2(0.5f, -3.5f),      float2(-2.5f, 1.5f),     float2(2.0f, -3.5f),     float2(0.5f, 3.5f),  };   unsigned short triangleindices[] = {     0, 1, 2,      3, 5, 4 };