C program to check whether input alphabet is a vowel or not

#include <stdio.h>
#include <conio.h> 
void 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); 
  getch();
}