Toph-Alayna and Vowels

#include<stdio.h>
#include<string.h>
int main()
{
   int len,i,count=0;
   char r[1000];
   gets(r);
   len=strlen(r);
   for(i=0;i<len;i++)
   {
       if(r[i] == 'a' || r[i] == 'e' || r[i] == 'i' || r[i] == 'o' || r[i] == 'u' || r[i] == 'A' || r[i] == 'E' || r[i] == 'I' || r[i] == 'O' || r[i] == 'U' )
       {
           count+=1;
       }
   }
   printf("%d\n",count);
   return 0;

}