CODEWITHSUNDEEP
c#string
DurpBurger
DurpBurger

Reputation: 15

C# string manipulation ideas request

I can't seem to find an 'good' way to go about doing a task with a string

say if I have a string, whose value is "Take Chocolate" and I detect if that string has the string "cola", in it, using the .Contains method, and it does contain "cola" in it. I want a way for the program get the character before the 'c' in "cola" and the character after the 'a', to check if the characters are both empty spaces. Any ideas how to tackle this problem? Any tips or ideas would be fantastic!

P.S. I am making a quite extensive text-based adventure game.

Upvotes: 0

Views: 144

Answers (5)

pradeep varma
pradeep varma

Reputation: 136

it return character before the 'c' in "cola" and the character after the 'a' in sentence

   Class6 c = new Class6();
 var t = s.ToLower().Replace("cola", "##").Split(new char[] { ',', '.', ' ' }).Where(h => h.Contains("##")).Select(h => c.getFistAndLast(h));

  public class class6 {
  public string getFistAndLast(string word)
    {
        string[] words = word.Split(new string[] { "##" }, StringSplitOptions.None);
        string h = "";
        if (words[0].Trim() != "")
            h = words[0].Remove(0, words[0].Length - 1)+",";
        if (words[1].Trim() != "")
            h += words[1][0];
        h += " ";
        return h;
    }
   }

Upvotes: 0

p.s.w.g
p.s.w.g

Reputation: 148980

What you're describing could easily be done with regular expressions. However, an easier method is just to split the string by spaces, then analyzing each part of the player's command.

Here's a highly simplified example, but it gets the idea across:

var playerCommand = "Take Chocolate";

var parts = playerCommand.Split();
// NOTE: use StringComparison.CurrentCultureIgnoreCase for case insensitive comparison
if (parts[0] == "Take") 
{
    if (parts[1] == "Chocolate") 
    {
        DoTakeChocolate();
    }
    else if (parts[1] == "Cola") 
    {
        DoTakeCola();
    }
    else
    {
        Console.WriteLine("There's no {0} here for you to take", parts[1]);
    }
}

Breaking down text commands into a simple tree like this has been at the heart of text-based adventure games since their earliest days.

Upvotes: 3

mybirthname
mybirthname

Reputation: 18127

    static void Main(string[] args)
    {
        string s = "Take Chocolate";
        string searchString = "cola";

        int beginIndex = 0;
        int endIndex = 0;

        if (s.Contains(searchString))
        {
            beginIndex = s.IndexOf(searchString, 0, s.Length);
            endIndex = beginIndex + searchString.Length;
        }

        if(endIndex < s.Length)
        {
            Console.WriteLine(s[endIndex + 1]);

        }
        else
        {
            Console.WriteLine("There is no character after" + searchString);
        }

        if(beginIndex > 0)
            Console.WriteLine(s[beginIndex - 1]);
        else
            Console.WriteLine("There is no character before" + searchString);

    }

Here is little program doing this. Hope it helps.

Upvotes: 1

Alex Buyny
Alex Buyny

Reputation: 3185

If your task is "determine if the phrase contains word", you can split the phrase into words in then check each of them, 

char[] delimiters = [',','.',' ']; // all delimiters that are not letters    
var phrase = "Take Chocolate, and,cola";
var containsCola = phrase.split(delimiters).Any(x => x.Equals("cola", StringComparison.OrdinalIgnoreCase);

Upvotes: 0

Prashant19sep
Prashant19sep

Reputation: 183

This is very simple to do. When you are checking for .Contains("cola"), instead check for .Contains(" cola "). Hope this is exactly what you want to do.

Upvotes: 2

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