How do I add at an array with user input?

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I am trying to make a simple little program that adds strings to an array then print all the strings. Turns out to be anything but simple because I can't even seem to add the strings to the array! Every time I try this it compiles but crashes the moment I give any input.

What I have tried:

C#

using System;
public class Practice
{

    static void Main()
    {
        int x=0; //num of words
        string[] str = new string[x];
        string ec = "not q"; //exit clause
        for(x=0; ec != "q"; x++)
        {
            str[x] = Console.ReadLine();
            ec = Console.ReadLine();

        }
    }

    

}

Posted 5-Apr-17 1:07am

Snowy_Panther

Updated 5-Apr-17 1:34am

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Karthik_Mahalingam 5-Apr-17 7:16am

what is your exact requirement and the issue you are facing?
your question and the code seems different.

Snowy_Panther 5-Apr-17 7:17am

I am trying at add strings to an array using console input. I haven't gotten to the print out of the array yet.

Karthik_Mahalingam 5-Apr-17 7:24am

refer the below example.

Snowy_Panther 5-Apr-17 7:55am

Okay so this is what I came up with:

<pre>using System;public class Practice{     static void Main()    {         int a = int.Parse(Console.ReadLine()); //amount of words        string[] array = new string[a];        for(int b=0;b<a; b++)        {            array[b] = Console.ReadLine();        }        Console.WriteLine("Press any key to continue...");        Console.ReadKey();        for(int b=0; b< array.Length; b++)        {            Console.WriteLine(array[b]);        }        Console.ReadKey();      }

Still have a question. In my case, if you enter a number of strings you want, you get that number of strings. Shouldn't it be one more since C# starts counting at 0?

Anyway thanks for the help guys, I really appreciate the fast responses.

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Mathew Soji · Accepted Answer · 2017-04-05T01:21:00

In C# when you declare an array , you have to specify the size; In the above code you have to initialize your array to some size .

string[] str = new string[10];

When you init an array with size zero ,it will create an empty array object .

Here I am initializing the array to be of size 10 .And in the for loop , may be you can check for the array length and based on the check you can declare a new array of the desired size and copy the contents of the original array into the new array.

Again there are build in methods like Array.Resize .
Array.Resize(T) Method (T[], Int32) (System)[^]

Karthik_Mahalingam · Accepted Answer · 2017-04-05T01:23:00

Quote:
I am trying at add strings to an array using console input. I haven't gotten to the print out of the array yet.

refer this simple example

System.Console.WriteLine("Enter 5 words");
       string[] array = new string[5];
       for (int i = 0; i < 5; i++)
       {
           array[i] = System.Console.ReadLine(); // read the line and stores in array
       }
       System.Console.WriteLine("press any key to print words");
       System.Console.ReadLine();
       foreach (string item in array)
       {
           System.Console.WriteLine(item);  // print each item from the array
       }
       System.Console.ReadLine();

CPallini · Accepted Answer · 2017-04-05T01:34:00

Why don't you use a List, instead?
E.g.

C#

public static void Main()
{
  List<string> strlist = new List<string>();
  string str;
  while (true)
  {
    Console.WriteLine("please enter a string ('q' to exit");
    str = Console.ReadLine();
    if (str == "q") break;
    strlist.Add(str);
  }

  Console.WriteLine("Entered string count = {0}", strlist.Count);
  foreach (string s in strlist)
  {
    Console.WriteLine(s);
  }
}

How do I add at an array with user input?

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