A. String Task
Petya started to attend programming lessons. On the first lesson his task was to write a simple program. The program was supposed to do the following: in the given string, consisting if uppercase and lowercase Latin letters, it:
- deletes all the vowels,
- inserts a character "." before each consonant,
- replaces all uppercase consonants with corresponding lowercase ones.
Vowels are letters "A", "O", "Y", "E", "U", "I", and the rest are consonants. The program's input is exactly one string, it should return the output as a single string, resulting after the program's processing the initial string.
Help Petya cope with this easy task.
The first line represents input string of Petya's program. This string only consists of uppercase and lowercase Latin letters and its length is from 1 to 100, inclusive.
Print the resulting string. It is guaranteed that this string is not empty.
tour
.t.r
Codeforces
.c.d.f.r.c.s
aBAcAba
.b.c.b
按题目意思将字符串里的A E I O U Y,或a e i o u y去掉并将所有大写转换为小写并在每个字符前加上 . 输出，
解题思路：先将大写转换为小写，然后判断每个字符是否是上述字符中的其中一个，如果不是则存入另外一个数组中，
然后以 .%c输出剩下的字符即可。
代码：