ABC

#include<string.h>
#include<stdio.h>
int main()
{
    char x[99];
    gets(x);
    int i;
    for(i=0; x[i]!='\0'; i++)
    {
        if((x[i]=='a'||x[i]=='e'||x[i]=='i'||x[i]=='y'||x[i]=='o'||x[i]=='u')||(x[i]=='A'||x[i]=='Y'||x[i]=='E'||x[i]=='I'||x[i]=='0'||x[i]=='U'))
        {
            x[i]=' ';

        }
        else if(x[i]>='A'&&x[i]<='Z')
        {
            {
                x[i]=x[i]-'A'+'a';
            }
            printf("%c%c",46,x[i]);
        }

        else
            printf("%c%c",46,x[i]);
    }
    return 0;
}