Udf
 

Hi!
i wrote this UDF
#include "udf.h"
DEFINE_UDS_FLUX(my_UDS_function,f,t,i)
{
cell_t c;
return 2.31e-5*101325*C_R(c,t)/C_P(c,t)*pow(C_T(c,t)/273.15,1.81)*C_YI_G(c,t,i)
}
(the last lines are all part of the same line)
but when i interpret it it gives:
invalid type for binary expression: double * array 2 of double
Can anybody tell me what the problem is?