#include <iostream>
#include <stdio.h>
#include <string.h>
#include <fstream>


using namespace std;

char* s_insert(char* s, size_t m) {
    size_t n = strlen(s) + 1;
    char* t = s;
    const char* k = "eyuioa";

    for (; *s; ++s) {
        if (*s == 'a' || *s == 'e' || *s == 'y' || *s == 'u' || *s == 'i' || *s == 'o' || *s == 'A' || *s == 'E' || *s == 'Y' || *s == 'U' || *s == 'I' || *s == 'O') {
            ++s;
            if (!*s || (n >= m))
            memmove(s + 1, s, (n - (size_t)(s - t)) * sizeof(char));
            *s = ' *';
        }
    }
    return t;
    ofstream fout("‪C:\Users\Asus\Desktop\3_1C++.txt");
    cout << " Новая строка : " << t;
    fout.close();
}

int main(void) {
    char s[100];
    ifstream fin("C:\Users\Asus\Desktop\fxujk.txt");
    gets_s(s);
    puts(s);
    puts(s_insert(s, sizeof(s)));
    return 0;
}