C program to check vowel or not.

#include<stdio.h>
#include<conio.h>
void main()
{
 clrscr();
 char ch;
 printf("Enter an alphabet : ");
 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("This is a vowel");
 }
 else
 {
  printf("This is not a vowel");
 }
 getch();
}