Complete sum program in Unix IPC

main()
{
void sum(int);
int n;
printf("Enter The Total Elements\n");
scanf("%d",&n);
sum(n);
}


void sum(int n)
{
int a[2],i,b[2],c[2],s[1000],temp=0;
int p,res=0,res1=0;
for(i=0;i
*(s+i)=i+1;
if(n%2==1)
{
n++;
*(s+i)=0;
}
pipe(a);
pipe(b);
p=fork();
for(i=0;i
if(p>0)
{
write(a[1],(s+i),1);
read(b[0],&temp,1);
res=res+temp;
}
else
{
read(a[0],&res1,1);
res=*(s+i+1)+res1;
write(b[1],&res,1);
}
printf("\rRES :%d",res);
}