Compiler Error C3016

'var' : index variable in OpenMP 'for' statement must have signed integral type

The index variable in an OpenMP for statement must be a signed integral type.

The following sample generates C3016:

// C3016.cpp
// compile with: /openmp
int main()
{
   #pragma omp parallel
   {
      unsigned int i = 0;
      // Try the following line instead:
      // int i = 0;

      #pragma omp for
      for (i = 0; i <= 10; ++i)   // C3016
      {
      }
   }
}