[AhmadKoolivand]

Hello everyone. when I compile below UDF, printf function does not work in a transient simulation but when I interpret it, it does work and the value is printed in the console. How can I fix it with compiled UDFs?

#include"udf.h"

double au;
double a;
int n;

DEFINE_ADJUST(bubble_velocity,domain)
{
#if !RP_HOST
Thread *t;
Thread *st;
cell_t c;
real FCV[ND_ND];
n=0;
au=0;
a=0;
thread_loop_c(t,domain)
{
st=THREAD_SUB_THREAD(t,1);
begin_c_loop_int(c,t)
{
C_CENTROID(FCV,c,t);
au+=C_VOF(c,st)*C_U(c,t)*C_VOLUME(c,t);
a+=C_VOF(c,st)*C_VOLUME(c,t);
n+=1;
}

end_c_loop_int(c,t)
}

printf("n: %d\n", n);
#endif




}