Problem:
Score : 100 points

Problem Statement

Given a lowercase English letter c, determine whether it is a vowel. Here, there are five vowels in the English alphabet: a, e, i, o and u.

Constraints

c is a lowercase English letter.

Input

The input is given from Standard Input in the following format:

c

Output

If c is a vowel, print vowel. Otherwise, print consonant.

Sample Input 1

a

Sample Output 1

vowel

Since a is a vowel, print vowel.

Sample Input 2

z

Sample Output 2

consonant

Sample Input 3

s

Sample Output 3

consonant

Solution in C (Clang 10.0.0) (judge verdict: Accepted)

#include <stdio.h>

int main(void){
  char input;
  int flg = 0;

  scanf("%c",&input);
  
  if((input == 'a')||
     (input == 'i')||
     (input == 'u')||
     (input == 'e')||
     (input == 'o')){
    flg++;
  }
  else{
    flg = 0;
  }
  if(flg!=0){
    printf("vowel\n"); 
  }  
  else{
    printf("consonant\n");
  }
  return 0;
}