Sum of prime

#include<stdio.h>

int main()
{
    int a,b,c,d,e=0,f=0,g=0;
    scanf("%d %d",&c,&d);
    for(a=c;a<=d;a++)
    {
        for(b=1;b<=a;b++)
        {
            if(a%b==0)
            {
                e++;
            }
        }
        if(e==2)
        {
            f+=a;
            g++;
        }
        e=0;
    }
    printf("%d %d\n",g,f);

    return 0;
}