Hacker rank-for loop

#include <stdio.h>
main()
{ int i,a,b;

scanf("%d",&a);
scanf("%d",&b);
for(i=a;i<=b;i++)
{  if(i>9)
{  if(i%2==0)
printf("even\n");
else printf("odd\n");

}
else switch(i)
{ case 1:printf("one\n");break;
case 2:printf("two\n");break;
case 3:printf("three\n");break;
case 4:printf("four\n");break;
case 5:printf("five\n");break;
case 6:printf("six\n");break;
case 7:printf("seven\n");break;
case 8:printf("eight\n");break;
case 9:printf("nine \n");break;


}


}

}