Count the number of vowels in a string

C programming code :

#include <stdio.h>

int main() {
   char s[1000]; 
   scanf("%s", s);    
   int i = 0;
   int vowels = 0;            
   int consonants = 0;        

   while(s[i++] != '\0') {
      if(s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' || s[i] == 'u' )
         vowels++;
      else
         consonants++;
   }

   printf("%d",vowels);

   return 0;
}

Python code:

def vowel_count(str): 
      
    count = 0
    vowel = "aeiouAEIOU"
      
    for alphabet in str: 
      
        if alphabet in vowel: 
            count = count + 1
      
    print(count, end='') 
      
str = input()
vowel_count(str) 

Java code:

import java.util.Scanner;

public class code1 { 
		
	static int isVowel(char ch) 
	{ 
		ch = Character.toUpperCase(ch); 
		if(ch=='A' || ch=='E' || ch=='I' || ch=='O' || ch=='U') {
			return 1; 
		}
		else return 0; 
	} 
	
	static int countVowels(String str, int n) 
	{ 
		if (n == 1) {
			return isVowel(str.charAt(n - 1)); 
		}
		return countVowels(str, n-1) + isVowel(str.charAt(n - 1)); 
	} 
	
	public static void main(String args[]) 
	{ 
		Scanner sc = new Scanner(System.in);
		String str = sc.nextLine();
		System.out.print(countVowels(str,str.length())); 
	} 
}