492.cpp

#include <bits/stdc++.h>
char a[100000000];
char b[100000000];
void work(char b[]) {
    char c[4];
    int i, l;
    l = strlen(b);
    if (l == 1 || b[0] == 'e' || b[0] == 'E' || b[0] == 'a' || b[0] == 'A' || b[0] == 'i' || b[0] == 'I' ||
        b[0] == 'o' || b[0] == 'O' || b[0] == 'u' || b[0] == 'U') {
        strcat(b, "ay");
    } else {
        c[0] = b[0];
        c[1] = '\0';
        for (i = 0; i < l; i++) {
            b[i] = b[i + 1];
        }
        strcat(c, "ay");
        strcat(b, c);
    }
}

int main() {
    int i, j, k;
    while (gets(a)) {
        j = 0;
        k = strlen(a);
        b[0] = '\0';
        for (i = 0; i <= k; i++) {
            if (a[i] >= 'a' && a[i] <= 'z' || a[i] >= 'A' && a[i] <= 'Z') {
                b[j] = a[i];
                j++;
            } else {
                b[j] = '\0';
                if (j != 0) {
                    work(b);
                    j = 0;
                    printf("%s", b);
                }
                if (a[i] != '\0') {
                    printf("%c", a[i]);
                }
            }
        }
        printf("\n");
    }
    return 0;
}