I have made a program to check whether alphabet is vowel or consonant using following code:-

Code:
#include<stdio.h>
#include<conio.h>
void main()
{
char ch;
clrscr();
printf("Enter any alphabet.\n");
scanf("%c",&ch);
switch(ch)
{
case 'a':
case 'e':
case 'i':
case 'o':
case 'u':
            printf("Vowel.");
            break;
default:
            printf("Consonant.);
            break;
}
getch();
}
It is working fine as it is supposed to but I want to ask is there a way to use OR and put all those vowels in one line rather than 5 different? I tried a bit but failed.
Can someone help out?