How to count specific letterr in a string?

Ever Green

I Created a windows application in c#.net and I wanna count specific character in a string for example i wanna count how many "g" in "Debugging" string:
Someting is wrong with the Substring().I debugged it and i saw it is only check the first character of the string. Any help??

Code:

private void btnclick_Click(object sender, EventArgs e)
{
int lettercount = 0;
const string strtext = "Debugging";
string letter;

for (int i = 0; i < strtext.Length; i++)
{
letter = strtext.Substring(0,1);

if (letter == "g")
{
lettercount++;
}

}
textBox1.Text = "g appears" + lettercount + " " + "times";

}

Output:
"g appears 0 times"

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nilanka Dharmadasa17y ago

Accepted answer

Hi,

Do this change.

 private void btnclick_Click(object sender, EventArgs e)
{
int lettercount = 0;
const string strtext = "Debugging";
string letter;

for (int i = 0; i < strtext.Length ; i++)
{
letter = strtext.Substring(i,1);


if (letter == "g")
{
lettercount++;
}

}
textBox1.Text = "g appears" + lettercount + " " + "times";


}

Sam Hobbs17y ago
That is so very frusttrating for me. Extremely frustrating. I answered the question; any person capable of programming could understand the answer.
0
Ever Green17y ago
Hi Niki,
Thank you very much for help. It is working now.
I got the exact output what i was wanting.

Thanks a lot again.
0
Sam Hobbs17y ago
Look closely at the line:
letter = strtext.Substring(0,1);
Notice that Substring will always use zero for the index. You need to change that.

Also note that instead of strtext.Substring, you can use strtext[] to get each character. I would be more specific, but I think this is a class problem and the best way to help you is to help you to figure it out.
0