Character is vowel or not

#include <stdio.h>
main()
{
  char ch;
   printf("Enter a character\n");
  scanf("%c", &ch);
if (ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' || ch == 'U')
printf("%c is a vowel.\n", ch);
  else
    printf("%c is not a vowel.\n", ch);
   return 0;
}

Output:
Enter a character a
a is a vowel.