Compilation Error--UVA-10533

#include<stdio.h>
#include<math.h>
#define mx 1000007
int N = 1000005;
int status[mx];
void seive()
{
    int i, j, root;
    for( i = 2; i <= N; i++ ) status[i] = 0;
    root = int( sqrt((double) N ));
    for( i = 3; i <= root; i += 2 )
    {
        if( status[i] == 0 )
        {
            for( j = i * i; j <= N; j += i + i )
                status[j] = 1;
        }
    }
}
int digit_prime(int m)
{
    int j=0;
    while(m!=0)
    {
        j+=(m%10);
        m/=10;
    }
    return j;
}
int main()
{
    int n, a, i, j, b, c, d;
    seive();
    scanf("%d", &n);
    while(n--)
    {
        j=0;
        scanf("%d %d", &a, &b);
        if(a==2)
            j+=1;
        else if(a%2==0)
            a+=1;
        for(i=a; i<=b; i+=2)
        {
            if(status[i]==0)
            {
                d=digit_prime(i);
                if(d==2){
                    j++;
                }
                else if(d%2!=0){
                    if(status[d]==0)
                    {
                        j++;
                    }
                }
            }
        }
        printf("%d\n", j);
    }
    return 0;
}