#include <stdio.h>
int main(int argc, char* argv[]){
	if(argc != 2){
		printf("ERROR: You need more arguments \n");
		return 1;
	}
	for(int i = 0; argv[1][i] != '\0'; i++){
		char letter = argv[1][i];
		
		switch(letter){
			case 'a':
			case 'A':
				printf("%d: 'A' \n",i);
				break;
			case 'e':
			case 'E':
				printf("%d: 'E'' \n",i);
			case 'i':
			case 'I':
				printf("%d: 'I' \n",i);
			case 'o':
			case 'O':
				printf("%d: 'O' \n",i);
			case 'u':
			case 'U':
				printf("%d: 'U' \n",i);
			case 'y':
			case 'Y':
				if(i > 2){
					printf("%d: 'Y' \n", i);
				}
				break;
			default:
				printf("%d: %c is not a vowel \n",i,letter);
		}
	}
    return 0;
}