c program to check whether input alphabet is a 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;
}