Hello, help needed

Francisca Fraser

8y985

I am a newly indoctrinated into C#, I wrote this code and its pulling an error (Use of unassigned local variable "words' ) in the line [for(int i = 0, i < words.Length; i++)], could you tell me where I went wrong

Thanks

This is the code

static void Main(string[] args)

{

BinaryTree BT = new BinaryTree();

string line; // will be used to read the file, one line at a time

int count = 1;

string[] words;

try

{

count = 1;

StreamReader reader = new StreamReader("testfile.txt");//create input stream

line = reader.ReadLine();//get the next line

while (line != null)

words = line.Split(' ');

for (int i = 0; i

BT.Insert(words[i], count);

line = reader.ReadLine();

reader.Close();

}

catch (IOException e)

{

Console.WriteLine("" + e.ToString());

BT.Display();

Console.ReadLine();

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

Prasham Sabadra8y ago
Accepted answer
Hi,

I tried this in console application. If you intialise your words variable build will be successful as string words = {}

But then this program wont work properly. Coupleof things or best practice - Use the {} after while and for loop in the above program and then it works properly.

Test program is -

public class Program
{
static void Main(string[] args)
{
string[] words = { };
string line;
try
{
StreamReader reader = new StreamReader("testfile.txt");
line = reader.ReadLine();
while (line != null)
{
words = line.Split(' ');
for (int i = 0; i < words.Length; i++)
{
Console.Write(words[i]);
line = reader.ReadLine();

}

}
reader.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
Console.ReadKey();
}
Console.ReadKey();
}//main
}//cs
}//ns
Francisca Fraser8y ago
Thanks Prasham, it worked