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C# 计算字符串中元音的数量_C#_Asp.net - Fatal编程技术网

C# 计算字符串中元音的数量

C# 计算字符串中元音的数量,c#,asp.net,C#,Asp.net,我有一个文本框,用户在其中输入一个随机字符串。我想计算字符串中元音(A、E、I、O、U)的数量,并在labelcontrol中显示结果 protected void Button1_Click(object sender, EventArgs e) { string EnterString; EnterString = TextBox1.Text; char ch1 = 'a'; char ch2 = 'e';

我有一个文本框,用户在其中输入一个随机字符串。我想计算字符串中元音(A、E、I、O、U)的数量,并在labelcontrol中显示结果

protected void Button1_Click(object sender, EventArgs e)
    {
        string EnterString;
        EnterString = TextBox1.Text;
        char ch1 = 'a';
        char ch2 = 'e';
        char ch3 = 'i';
        char ch4 = 'o';
        char ch5 = 'u';

        int counta = 0;
        int counte = 0;
        int counti = 0;
        int counto = 0;
        int countu = 0;
        char ch6 = 'A';
        char ch7 = 'E';
        char ch8 = 'I';
        char ch9 = 'O';
        char ch10 = 'U';

        int countA = 0;
        int countE = 0;
        int countI = 0;
        int countO = 0;
        int countU = 0;

        //const string vowels = "aeiou";
        /* return value.Count(chr => vowels.Contains(char.ToLower(chr)));
         return Value.Count()*/
        int j = counta + counte + counti + counto + countu + countA + countE + countI + countO + countU;

        foreach (char v in EnterString)
        {
            if (v == ch1) { counta++; j++; }

            else if (v == ch2) { counte++; j++; }

            else if (v == ch3) { counti++; j++; }

            else if (v == ch4) { counto++; j++; }

            else if (v == ch5) { countu++; j++; }
        }
        foreach (char v in EnterString)
        {
            if (v == ch6) { countA++; j++; }

            else if (v == ch7) { countE++; j++; }

            else if (v == ch8) { countI++; j++; }

            else if (v == ch9) { countO++; j++; }

            else if (v == ch10) { countU++; j++; }
        }

        Label1.Text = j.ToString();
    }

您的代码中包含以下内容:

const string vowels = "aeiou";
return value.Count(chr => vowels.Contains(char.ToLower(chr)));
这是可行的,至少如果你的文化是我们的话。所以我不知道你为什么评论它支持现在的怪物

在上,它将失败,因为
I
的小写不是
I
,而是
ı
(未启用)。因此,如果您将元音定义为
aeiouAEIOU
,则应使用
ToLowerInvariant

但是如果你想包含其他元音(比如
Ä
),我不知道怎么做,除非列出所有字符

全面实施:

int CountVowels(string value)
{
    const string vowels = "aeiou";
    return value.Count(chr => vowels.Contains(char.ToLowerInvariant(chr)));
}
看起来您从以下方面获得了良好的代码部分:
int元音=0;
WriteLine(“请输入字符串:”);
字符串main=Console.ReadLine();
对于(int j=0;j
这可能有助于好运

私有无效按钮1\u单击(对象发送者,事件参数e)

publicstaticvoidmain()
{
char[]句=新字符[100];
int i,元音=0,辅音=0,特殊=0,n;
Console.WriteLine(“输入句子长度\n”);
n=int.Parse(Console.ReadLine());
对于(i=0;i
#包括
使用名称空间std;
int main()
{    
int t;
cin>>t;
集合元音={'A','E','I','O','U','A','E','I','O','U'};
而(t--)
{
字符串s;
int c=0;
cin>>s;
用于(字符i:s)
if(元音.find(i)!=元音.end())
++c;
cout
字符串元音=(“aeiouAEIOU”);
int i=0;
int j=0;
int-vouelcount=0;
字符串main=textBox1.Text;/or Console.ReadLine();
而(j
你的大写字母加上stuckregex会更容易我在想你如何定义一个元音?只有英语中使用的5个元音,或者其他语言中也使用的元音?我知道没有哪个论坛认为使用大写字母写任何东西都是好的风格。让它成为超多元文化,使用ToLowerInvariant!这只涉及一个问题,但不涉及一些语言有额外的元音。而在其他语言中元音并不是适用于他们书面语言的概念(例如汉语不使用字母书写)@CodeInChaos嗨,我的应用程序中没有这些代码…我的代码运行良好,但我想最小化它意味着更少的代码..你能帮助我吗。这两行代码是OP中代码的一部分。你刚刚注释了它们。我是一个初学者,所以我正在学习如何有效地编写代码..我想用英语插入一个字符串..请帮助我学习!!!!试着解释一下你的代码是做什么的,以及它与问题中的代码有什么不同。这样大家学习起来容易多了。如果你发布几行关于你正在做什么的内容,而不是一个简单的代码块,这对OP很有帮助!
int vowel = 0;
        Console.WriteLine("Please enter the string:");
        string main = Console.ReadLine();
        for (int j = 0; j < main.Length ; j++)
        {
            if (main[j] == 'a' || main[j] == 'A' || main[j] == 'e' || main[j] == 'E' || main[j] == 'i' || main[j] == 'I' || main[j] == 'o' || main[j] == 'O' || main[j] == 'u' || main[j] == 'U')
            {
                vowel++;
            }
        }
        Console.WriteLine("Number of vowels in sentence is :"+ vowel);
        Console.ReadLine();
    Console.WriteLine("Please input your text: ")
    mystring = Console.ReadLine
    For i = 1 To mystring.Length
        Console.Write((mystring(i - 1)) & ",")
        isItAVowel = False
        If mystring(i - 1) = "a" Or mystring(i - 1) = "A" Then isItAVowel = True
        If mystring(i - 1) = "e" Or mystring(i - 1) = "E" Then isItAVowel = True
        If mystring(i - 1) = "i" Or mystring(i - 1) = "I" Then isItAVowel = True
        If mystring(i - 1) = "o" Or mystring(i - 1) = "O" Then isItAVowel = True
        If mystring(i - 1) = "u" Or mystring(i - 1) = "U" Then isItAVowel = True
        If isItAVowel Then
    {

        string EnterString;
        EnterString = textBox1.Text;
        const string vowels = "aeiou";
        label1.Text = EnterString.Count(myString => vowels.Contains(char.ToLowerInvariant(myString))).ToString();

    }
public static void Main()
{
    char[] sentence = new char[100];

    int i, vowels = 0, consonants = 0, special = 0, n;
    Console.WriteLine("Enter the Length of the sentence  \n");
    n = int.Parse(Console.ReadLine());
    for (i = 0; i < n; i++)
    {
        sentence[i] = Convert.ToChar(Console.Read());
    }
    for (i = 0; sentence[i] != '\0'; i++)
    {
        if ((sentence[i] == 'a' || sentence[i] == 'e' || sentence[i] ==
        'i' || sentence[i] == 'o' || sentence[i] == 'u') ||
        (sentence[i] == 'A' || sentence[i] == 'E' || sentence[i] ==
        'I' || sentence[i] == 'O' || sentence[i] == 'U'))
        {
            vowels = vowels + 1;
        }
        else
        {
            consonants = consonants + 1;
        }
        if (sentence[i] == 't' || sentence[i] == '\0' || sentence[i] == ' ')
        {
            special = special + 1;
        }
    }

    consonants = consonants - special;
    Console.WriteLine("No. of vowels {0}", vowels);
    Console.WriteLine("No. of consonants {0}", consonants);
    Console.ReadLine();
    Console.ReadLine();
}
#include <bits/stdc++.h>    
using namespace std;    
int main()    
{    
    int t;
    cin >> t;
    set<char> vowels = {'A', 'E', 'I', 'O', 'U', 'a', 'e', 'i', 'o', 'u'};
    while(t--)
    {
        string s;
        int c = 0;
        cin >> s;
        for(char i : s)
            if(vowels.find(i) != vowels.end())
                ++c;
        cout << c << "\n";
    }
    return 0;
}
        string vowelList = ("aeiouAEIOU");
        int i = 0;
        int j = 0;
        int vowelCount = 0;

        string main = textBox1.Text;  /or Console.ReadLine();

        while (j < main.Length)

        {
            while (i < vowelList.Length)
            {
                if (main[j] == vowelList[i])
                {
                    vowelCount++;
                }

                i++; 
            }

            j = j + 1;
            i = 0;
        }

        label1.Text = ("Number of vowels in sentence is :" + vowelCount);  /or Console.Writeline ("Number of vowels in sentence is:  " + vowelCount
count = 0
string=input("Enter string:")
vowels = set("aeiouAEIOU")
for letter in string:
    if letter in vowels:
        count += 1
print("Count of the vowels is:")
print(count)