#include $$stdio$.$h$>$

$2$ #define N $1000$

$3$ #define THREAD$\_$NO $10$

$4$

$5-$ int main$()\{$

$6$

double a$[$N$],$ b$[$N$],$ c$[$N$],$ d$[$N$]$;

$7$ int $1$;

$8$

$10$

$9/*$ some instructions that initialize arrays a$,$ b$,$ c$,$ d take place here. $*/$

$11$

$12$

$13-$

$14$

$15$

#pragma omp parallel for num$\_$threads$($THREAD$\_$NO$)$

for$($ i $=0$; i $<$ N$/2$; i$++)\{|$

b$2*$i$+=$ a$2*$i$+$ d$2*$i$$

c$[$i$]+=$ b$[2*$i$+1]$ ~ a$[2*$i$]$;

$16$

$\}$