I want to check if the string has multiple occurrence of a single character in a sentence and gets its length

Question

I am new to this language and still learning, I have a windows form application that has 2 textboxes on it and a one-button, the first box is where the user input a sentence or word, the second box is where the user inputs a single character to find if it's in the sentence, the button is for counting how many multiple occurrence of a character to the sentence.

example:
txtbox1: Hello World!
txtbox2: o
display: 2

what is the easier to do? or recommended?

We cannot write your homework for you. Please try to setup a minimal program, then come again when you have a specific question. — SQL Police, Jan 14 '20 at 15:13

MD. Khairul Basar · Answer 1 · 2020-01-14T15:30:14.620

2

From this answer, you can use .Count().

var source = txtbox1.Text;
var charToMatch = txtbox2.Text.First();
var count = source.Count(f => f == charToMatch);

edited Jan 14 '20 at 15:30

answered Jan 14 '20 at 15:15

MD. Khairul Basar

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thanks .count() is powerfulll though – Seonix Jan 14 '20 at 16:21

score 0 · Accepted Answer · edited Jan 15 '20 at 03:50

public int count(string s,string ch)        //s is the string and ch is the char to look for
{
    int count = 0;
    for (int i = 0; i < s.Length; i++)
        if(s[i]==ch[0])
            count++;
    return count;
}

private void button1_Click(object sender, EventArgs e)
{
    if (tbString.Text != "" && tbChar.Text != "")
        tbCount.Text = count(tbString.Text, tbChar.Text).ToString();
}

I want to check if the string has multiple occurrence of a single character in a sentence and gets its length

2 Answers2