Description

To check entered character is a vowel or not, check that character is
any one of lowercase a, e, i, o, u and uppercase A, E, I, O, U.

C/C++

/* C Program to Check Whether a Character is a Vowel or Not */
//Save it as CheckVowel.c

#include<stdio.h>
int main(){
    char data;
    printf("Enter a character : ");
    scanf("%c",&amp;data);
	
    //Checking for both upper and lower case
    if(data=='a' || data=='e' || data=='i' || data=='o' || data=='u' || data=='A' ||
       data=='E' || data=='I' || data=='O' || data=='U'){
        printf("%c is a vowel",data);
    }
    else{
        printf("%c is not a vowel",data);
    }
    return 0;
}

Output

Input:
Enter a character : k
Output:
k is not a vowel

Java

/* Java Program to Check Whether a Character is a Vowel or Not */
//Save it as CheckVowel.java

import java.io.*;
import java.util.Scanner;

public class CheckVowel {

	public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
		
        System.out.println("Enter a character : ");
        char data = scanner.next().trim().charAt(0);
				
        //Checking for both upper and lower case
	    if(data=='a' || data=='e' || data=='i' || data=='o' || data=='u' || data=='A' ||
	       data=='E' || data=='I' || data=='O' || data=='U'){
	    	
	        System.out.print(data + " is a vowel");
	    }
	    else{
	    	System.out.print(data + " is not a vowel");
	    }
	}
}

Output

Input:
Enter a character : 
a
Output:
a is a vowel

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