Check for Vowels

            main()  
            {  
                char k;  
                clrscr();  
            
                printf("Enter a Character: ");  
                scanf(" %c", &k);  
            
                switch(k)  
                {  
                    case 'a':  
                    case 'e':  
                    case 'i':  
                    case 'o':  
                    case 'u':  
                        printf("\nIt's a vowel");  
                        break;  
            
                    default:  
                        printf("\nIt's not a vowel");  
                }  
            
                getch();  
            }  
            

Output: