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

using namespace std;

void String(char a[])
{
    char eng[] = {"qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM"},*uch,*ulet,*unew;
    for (uch=a;uch<a+strlen(a);uch++){
        for (ulet=eng;ulet<eng+strlen(eng)&&*ulet!=*uch;ulet++);
            if (ulet != eng+strlen(eng))
            {
                for(unew = a+strlen(a)+1 ; unew > uch; unew--)
                *(unew+1) = *unew;
                *(uch) = '*';
                *(uch+1) = '*';
            }
    }
}

int main()
{
    char a[30];
    puts("Enter string");
    gets(a);
    String(a);
    puts(a);
}