#include <stdio.h> int main() { char letter[10] = { 'A', 'E', 'I', 'O', 'U', 'a', 'e', 'i', 'o', 'u'}; char input; int found = 0; while (scanf(" %c", &input) == 1) { int found = 0; for (int i = 0; i < 10; i++) { if (input == letter[i]) { found = 1; break; } } if (found) { prin...