[sarah l]

hi every body
I am supposed to write a udf for heat generation rate which is a cosine function
#include"udf.h"
DEFINE_SOURCE(energy_source,c,t,ds,eqn)

{
real x;
ds[eqn]=0.3*cos(0.3*x);
return sin(0.3*x) ;
}
but there are some errors! any one can help me to modidfy it. thanks