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我需要编写一个返回单词中元音数量的代码,我的代码中不断出现错误,要求缺少返回语句。请问有什么解决办法吗?:3

import java.util.*;

public class vowels
{
public static void main(String[] args)
{
    Scanner input = new Scanner(System.in);
    System.out.println("Please type your name.");
    String name = input.nextLine();
    System.out.println("Congratulations, your name has "+
                        countVowels(name) +" vowels.");
}
public static int countVowels(String str)
{
    int count = 0;
    for (int i=0; i < str.length(); i++)
    {
        // char c = str.charAt(i);
        if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'o' || str.charAt(i) == 'i' || str.charAt(i) == 'u')
        count = count + 1;
    }
}
}
4

1 回答 1

2

正如几条评论指出的那样,您缺少 return 声明。

你需要返回count

public static int countVowels(String str)
{
    int count = 0;
    for (int i=0; i < str.length(); i++)
    {
        // char c = str.charAt(i);
        if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'o' ||  
            str.charAt(i) == 'i' || str.charAt(i) == 'u')
        count = count + 1;
    }

    return count;
}
于 2013-10-24T21:19:13.773 回答