I got answer in my lap but it s not working in spoj can u tell me y

include

void pp(long int r,long int s)
{
int f=0;
long int i,j;
for(j=r;j<=s;j++)
{

for(i=2;i{
if((j%i)==0)
f=1;
}

if(f==0)
printf("\n%ld",j);
f=0;
}
}
int main()
{
long int m,n;
int t,i,u;
scanf("%d",&t);
for(i=0;i{
scanf("%ld %ld",&n[i],&m[i]);
printf("\n");

}
for(i=0;i{
pp(n[i],m[i]);
printf("\n");
}
scanf("%d",&u);
return(0);
}