Reading array elements from the same line (C#)

Question

Is it possible to read the elements of an array from the same line (from Console) in C#? I know it's possible to read multiple inputs from the console and storing the individual parts in different variables using Split(). But I can't understand how to do it in arrays.

Code

for (int i = 0; i < arrival.Length; i++)
{
     arrival[i] = int.Parse(Console.ReadLine());

}

For example, I have to enter the elements 34 35 36 37 in the array. If I use the above mentioned code, I have to enter each element in a separate line. But what I need is, if I enter 34 35 36 37 in the Console, it must store each number as an element in the array. How to do this?

you have to split your Input string (with the string method Split) — Thomas Krojer, Sep 22 '15 at 05:08
That's the part I can't understand. Perhaps, Could you explain this with an example? BTW I am new to C# — kakkarot, Sep 22 '15 at 05:10
while posting question you didn't show your code (" your own work").. so someone might have downvoted it because of that.. not sure though — amit dayama, Sep 22 '15 at 05:54

score 2 · Accepted Answer · edited Sep 22 '15 at 05:50

2

you can do it in following manner for array of type integer

string readLine=Console.ReadLine());
string[] stringArray=readLine.split(' ');
int[] intArray = new int[stringArray.Length];
for(int i = 0;i < stringArray.Length;i++)
{
// Note that this is assuming valid input
// If you want to check then add a try/catch 
// and another index for the numbers if to continue adding the others
    intArray[i] = int.parse(stringArray[i]);
}

edited Sep 22 '15 at 05:50

Kamil Budziewski

22,699
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answered Sep 22 '15 at 05:18

amit dayama

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I think it won't work. `int.Parse` accepts string, not `string[]` – Kamil Budziewski Sep 22 '15 at 05:42
yeah, now it looks better. – Kamil Budziewski Sep 22 '15 at 05:51
is there any direct way to parse array of string to array of integer? – amit dayama Sep 22 '15 at 05:52
by direct you mean `one-liner`? Check my answer and there is parsing of string array to int array in one line (using Linq) – Kamil Budziewski Sep 22 '15 at 06:00

score 0 · Answer 2 · answered Sep 22 '15 at 05:12

I am not clear with question, may be you are looking for this using System;

class Program
{
    static void Main()
    {
    string s = "there is a cat";
    // Split string on spaces.
    // ... This will separate all the words.
    string[] words = s.Split(' ');
    foreach (string word in words)
    {
        Console.WriteLine(word);
    }
    }
}

Output will be

there
is
a
cat

Ref link - http://www.dotnetperls.com/split

score 0 · Answer 3 · answered Sep 22 '15 at 05:20

you need to read from console, split the input string, convert the splitted strings to your type (here to double), then add them to your own array:

here is the code doing what you want:

using System;
using System.Collections.Generic;
using System.Linq;

namespace test4
{
class Program
{
    static void Main(string[] args)
    {
        List<double> arrayOfDouble = new List<double>(); // the array to insert into from console

        string strData = Console.ReadLine(); // the data, exmple: 123.32, 125, 78, 10
        string[] splittedStrData = strData.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
        // trim then parse to souble, then convert to double list
        List<double> dataArrayAsDouble = splittedStrData.Select((s) => { return double.Parse(s.Trim()); }).ToList();

        // add the read array to your array
        arrayOfDouble.AddRange(dataArrayAsDouble);
    }
}
}

Reading array elements from the same line (C#)

3 Answers3

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