Prog#043: word for vowel- Both uppercase and lowercase

/* 
Program#43
word for vowel- Both uppercase and lowercase
*/

#include <stdio.h>
main(){
char a;
printf("\nEnter a vowel :");
scanf("%c",&a);
switch(a){
case 'A':
case 'a':
printf("\namazon\n");
break;
case 'E':
case 'e':
printf("\nebay\n");
break;
case 'I':
case 'i':
printf("\nigoogle\n");
break;
case 'O':
case 'o':
printf("\nopen office\n");
break;
case 'U':
case 'u':
printf("\nubuntu\n");
break;
default:
printf("\n %c not a vowel",a);
}
}