Develop Reference

Save and load a game by using StreamWriter and ReadWriter (C#)

I'm creating a small program which can save and load char array values. Then, I got stuck with two problems.
I have no idea how to make the program end after saving the data.
After loading the char array, it looks the game starts where I saved last time. However, when I put "#" on the place where is already marked, it is accepted. (It is supposed to display error message)
This is when I start new game.
It displays error message properly.
Here is class which includes streamWriter and streamReader.
public class History
{
public char QUIT = 'Y';
public char CONTINUE = 'N';
public char inputGameContinue;
public void WriteFile(char []arr)
{
FileStream sb = new FileStream("MyFile.txt", FileMode.OpenOrCreate);
StreamWriter sw = new StreamWriter(sb);
WriteLine("If you want to save the data, enter" + QUIT +"| To continue, enter "+CONTINUE );
inputGameContinue = char.Parse(ReadLine());
if(inputGameContinue=='Y')
{
sw.Write(arr);
WriteLine("The data is saved!");
}
sw.Close();
}
public void ReadFile()
{
string path = "MyFile.txt";
WriteLine("New game? >> 1 | Load saved data? >>2 ");
int command = int.Parse(ReadLine());
if (command == 2)
{
using (StreamReader sr = new StreamReader(path))
{
while (sr.Peek() >= 0)
{
WriteLine(sr.ReadLine());
}
}
}
}
}
Class2
using System;
using static System.Console;
using System.IO;
namespace createSample
{
public class writeRead
{
public static void Main(string[] args)
{
InputClass inputClass = new InputClass();
ArrayValue arrayValue = new ArrayValue();
History history = new History();
WriteLine("Welcome to game!");
WriteLine("");
history.ReadFile();
do
{
inputClass.inputNumber();
while (true)
{
if (arrayValue.arr[inputClass.input] == '#')
{
WriteLine("{0} already marked '#'. Try another.", inputClass.input);
inputClass.inputNumber();
}
else
{
arrayValue.arr[inputClass.input] = '#';
arrayValue.printArray();
history.WriteFile(arrayValue.arr);
break;
}
}
}
while (checkWhenFinish(arrayValue)!=1 );
WriteLine("All letters are marked with '#'");
Read();
}
public static int checkWhenFinish(ArrayValue a)
{
if(a.arr[0] != '0' && a.arr[1] != '1' && a.arr[2] != '2' && a.arr[3] != '3' && a.arr[4] != '4')
{
return 1;
}
else
{
return 0;
}
}
}
}
Class3
using System;
using System;
using System.Numerics;
using System.Reflection.Emit;
using static System.Console;
using System.IO;
namespace createSample
{
public class ArrayValue
{
public char []arr = { '0','1', '2', '3', '4' };
public void printArray()
{
WriteLine("{0},{1},{2},{3},{4}", arr[0], arr[1], arr[2], arr[3], arr[4]);
}
}
}
Class 4
using System;
using System;
using System.Numerics;
using System.Reflection.Emit;
using static System.Console;
using System.IO;
namespace createSample
{
public class InputClass
{
public int input;
public void inputNumber()
{
while (true)
{
Write("Enter number ? (0 to 4) >> ");
if (!int.TryParse(ReadLine(), out input))
{
input = -1;
}
if (input == 0|| input == 1 || input == 2 || input == 3 || input == 4 )
{
break;
}
else
{
WriteLine("Error! Try again!");
}
}
}
}
}

The problem is when you call history.ReadFile() it can read the file and display its contents, but it never updates arrayValue.arr so when the check is done later, arrayValue.arr[inputClass.input] is still 2.
You might want to pass in arrayValue by reference to ReadFile() to have it updated:
history.ReadFile(ref arrayValue);
then in History
public void ReadFile(ref ArrayValue arrayValue)
{
...
while (sr.Peek() >= 0)
{
var line = sr.ReadLine();
WriteLine(line);
for (int i = 0; i < arrayValue.arr.Length; i++)
{
arrayValue.arr[i] = line[i];
}
}
...
}

Balanced Brackets using Array Stack in C#

I'm trying to make a program in C# to decide weather Brackets are balanced or not..
After some work i made it using Array Stack and it's working but i have 2 problems:
1) if i entered brackets like this way "()[]{}(())" it shall work
i.e ("I must start with only ( [ {") but if i started the string
with ("})]") it will always says unbalanced even if it was... so I'm
asking if someone could give me a hint for solution.
2) Is there a better way for Pop method cause the else condition is
just annoying me and if i removed it, it will no longer work
Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Balanced_Brackets
{
class Program
{
public static bool IsBalanced(string brackets)
{
bool balanced = false;
MyStack s = new MyStack();
foreach (var item in brackets)
{
if (item == '(' || item == '[' || item == '{')
s.Push(item);
else if (item == ')' || item == ']' || item == '}')
{
var poped = s.Pop();
if (poped == '(' && item == ')')
balanced = true;
else if (poped == '[' && item == ']')
balanced = true;
else if (poped == '{' && item == '}')
balanced = true;
else
return balanced = false;
}
}
if (balanced == true)
return true;
else
return false;
}
static void Main(string[] args)
{
string Brackets = Console.ReadLine();
IsBalanced(Brackets);
if (IsBalanced(Brackets))
Console.Write("Balanced");
else
Console.Write("Un-Balanced");
Console.ReadKey();
}
}
class MyStack
{
char[] exp = new char[5];
public int top = -1;
public bool IsEmpty()
{
return (top == -1);
}
public bool IsFull()
{
return (top == exp.Length - 1);
}
public void Push(char a)
{
if (!IsFull())
exp[++top] = a;
}
public char Pop()
{
if (!IsEmpty())
return exp[top--];
else
return ' ';
}
}
}

Check ReadKey only for letters (alphabet) in string

i am doing game "Hangman" but i have a problem. I am using ReadKey to find the guess of player, but he can use even numbers or buttons like "Enter" etc. I want to stop this, but i don't know how :/ Can you help me please? I want control, if in result of ReadKey is letter from alphabet or no (but it must be in "string" format, cuz i am working later with string). Thank you very much guys, here is my code :)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Hangman
{
class MainClass
{
/// <summary>
/// Hra Oběšenec
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
Console.WriteLine("Vítejte ve hře Oběšenec!");
//List slov, které bude hráč hádat
string[] words = new string[5];
words[0] = "car";
words[1] = "school";
words[2] = "apple";
words[3] = "orange";
words[4] = "xamarin";
//Získávám délku slova (hádaného slova)
for (int X = 0; X < words.Length; X++)
{
string guessWord = words[X];
short lifes = 5;
short guessedLetters = 0;
char GuessingLetter;
char[] lettersOfWord = new char[guessWord.Length];
//
for (int I = 0; I < guessWord.Length; I++)
{
//Length of word is changing to *
lettersOfWord[I] = '*';
}
bool InGame = true;
//When this while is true, the game is still going, when it will be false, the game will end
while (InGame)
{
//Ochrana proti špatnému inputu
try
{
Console.WriteLine(lettersOfWord);
Console.WriteLine("Stiskněte klávesu. Životy:" + lifes);
ConsoleKeyInfo result_guess = Console.ReadKey(true);
string result = result_guess.KeyChar.ToString();
if (result.Length == 0)
{
continue;
}
//Hráč hádá slovo
GuessingLetter = result[0];
lifes--;
for (int I = 0; I < lettersOfWord.Length; I++)
{
if (lettersOfWord[I] == '*')
{
//Pokud hráč uhádne písmenko ve slově
if (guessWord[I] == GuessingLetter)
{
lettersOfWord[I] = GuessingLetter;
guessedLetters++;
lifes++;
Console.WriteLine("Správně!");
}
}
}
}
catch (Exception e)
{
Console.WriteLine("Nastala neočekávaná chyba!" + e);
}
//Pokud prohraje(promrhá všechny pokusy) hra skončí, avšak pokud slovo uhádne (a zůstane alespoň jeden život) vyhrál hru
if (lifes== 0 || guessedLetters == guessWord.Length)
{
//Konec hry
InGame = false;
if (lifes == 0)
{
Console.WriteLine("Smůla prohrál jsi!");
Console.ReadKey();
break;
}
else
{
//Vítězství nad levlem
Console.WriteLine("Uhodnul jsi celé slovo! Gratuluji!!");
}
}
}
}
}
}
}

Check if the keychar is a letter with the IsLetter method and keep asking for letters if it doesn't. Something like this:
private char GetLetter()
{
while (true)
{
Console.WriteLine("Please input a letter.");
var character = Console.ReadKey().KeyChar;
if (char.IsLetter(character))
return character;
}
}

C# for case in string(easy)

so I have this code. I need to generate a for loop that checks all the characters in the string and checks if they are all valid(So numbers from 0->7). But I don't know how to write it, I tried something but it didn't work. Here are the examples:user enters: 77, code works, user enters 99, code doesn't work, user enters 5., code doesn't work, etc..
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace NALOGA1
{
class Program
{
static string decToOct(int stevilo)//v mojon primere 7
{
string izhod = "";
//7>0 DRŽI
while (stevilo > 0)
{
//izhodi se dodeli ostanek deljenja z 8 keri se spremeni v string
izhod = (stevilo % 8) + izhod;
//7/8;
stevilo /= 8;
}
return izhod;
}
static int Octtodesetisko(string stevilo)
{
double vsota = 0;
for (int i = stevilo.Length - 1; i >= 0; i--)
{
int stevka = stevilo[i] - '0';
vsota += (stevka * Math.Pow(8, i));
}
return (int)vsota;
}
static void Main(string[] args)
{
//3 podprogram-in progress
string prvastevilka = Console.ReadLine();
int prvasprememba = Int32.Parse(prvastevilka);
if (prvasprememba > 0)
{
Console.WriteLine(decToOct(prvasprememba));
}
else
{
Console.WriteLine("Napaka");
}
string drugastevilka = Console.ReadLine();
int drugasprememba = Octtodesetisko(drugastevilka);
foreach (char znak in drugastevilka)
{
if(znak!=1 || znak!=2 || znak!=3 || znak!=4 || znak!=5 || znak!=6 || znak!=7)
{
Console.WriteLine("Napaka");
}
else
{
Console.WriteLine("dela :D");
}
}
Console.ReadKey();
}
}
}

Personally, I would take advantage of the LINQ Enumerable.All method to express this in a very concise and readable way:
if (str.Any() && str.All(c => c >= '0' && c <= '7'))
{
Console.WriteLine("good");
}
else
{
Console.WriteLine("bad");
}
EDIT: No LINQ
It's not hard to translate what the LINQ Enumerable.All method does to a normal loop. It's just more verbose:
bool isValid = true;
foreach (char c in str)
{
if (c < '0' || c > '7')
{
isValid = false;
break;
}
}
if (str.Length != 0 && isValid)
{
Console.WriteLine("good");
}
else
{
Console.WriteLine("bad");
}

Firstly, there seems to be a mistake in the line
if(znak!=1 || znak!=2 || znak!=3 || znak!=4 || znak!=5 || znak!=6 || znak!=7)
I guess it should read
if(znak!='1' || znak!='2' || znak!='3' || znak!='4' || znak!='5' || znak!='6' || znak!='7')
which should be compressed to
if (znak >= '0' && znak <= '7')
You can use linq instead of the for loop here like this:
if (drugastevilka.All(c => c >= '0' && c <= '7')
Console.WriteLine("dela :D");
else
Console.WriteLine("Napaka");
But the best solution is probably to use a regular expression:
Regex regex = new Regex("^[0-7]+$");
if (regex.IsMatch(drugastevilka))
Console.WriteLine("dela :D");
else
Console.WriteLine("Napaka");
Edit: the linq solution shown accepts empty strings, the regex (as shown) needs at least 1 character. Exchange the + with a * and it will accept empty strings, too. But I don't think you want to accept empty strings.

You are messing up with the datatype
Can you try with below code
static string decToOct(int stevilo)//v mojon primere 7
{
int izhod = 0;
//7>0 DRŽI
while (stevilo > 0)
{
//izhodi se dodeli ostanek deljenja z 8 keri se spremeni v string
izhod = (stevilo % 8) + izhod;
//7/8;
stevilo /= 8;
}
return (izhod.ToString());
}

What about something like this?
class Program
{
static void Main(string[] args)
{
string someString = "1234567";
string someOtherString = "1287631";
string anotherString = "123A6F2";
Console.WriteLine(IsValidString(someString));
Console.WriteLine(IsValidString(someOtherString));
Console.WriteLine(IsValidString(anotherString));
Console.ReadLine();
}
public static bool IsValidString(string str)
{
bool isValid = true;
char[] splitString = str.ToCharArray(); //get an array of each character
for (int i = 0; i < splitString.Length; i++)
{
try
{
double number = Char.GetNumericValue(splitString[i]); //try to convert the character to a double (GetNumericValue returns a double)
if (number < 0 || number > 7) //we get here if the character is an int, then we check for 0-7
{
isValid = false; //if the character is invalid, we're done.
break;
}
}
catch (Exception) //this will hit if we try to convert a non-integer character.
{
isValid = false;
break;
}
}
return isValid;
}
}
IsValidString() takes a string, converts it to a Char array, then checks each value as such:
Get the numeric value
Check if the value is between 0-7
GetNumericValue will fail on a non-integer character, so we wrap it in a try/catch - if we hit an exception we know that isValid = false, so we break.
If we get a valid number, and it's not between 0-7 we also know that isValid = false, so we break.
If we make it all the way through the list, the string is valid.
The sample given above returns:
IsValidString(someString) == true
IsValidString(someOtherString) == false
IsValidString(anotherString) == false

How to append sounds in C#

I am studying C# by myself by reading some books and watching some tutorials. So, i decided to make a small project at the same time, to get more experience and harden my knowledge. I am trying to create a text to speech program in Georgian(my language) but, i couldn't understand how to append different sounds to each other. For example, when my program wants to say "language" it will divide the word to "la" "n" "gu" "a" "ge" so, i have recorded these parts and want to append them and create a word. I looked for classes on MSDN.COM and found SoundPlayer but, i couldn't figure out how to append the sounds of WAV format. i want to add one sound to another and play a new one, for example i have sound that says "aaa" and the other says "bbbb" i want to get a sound that says "aaabbbb".
To divide words i created an arraylist and used this code.
public ArrayList divide(String s) //დაყოფა და arraylist-ში გადანაწილება
{
ArrayList a = new ArrayList();
int i = 0;
while (i < s.Length)
{
if (s[i] == ',' || s[i] == ' ' || s[i] == '.')
{
a.Add(s.Substring(i, i + 1));
i++;
continue;
}
if (consonant(s[i]) && (i + 1) != s.Length && sonant(s[i + 1]))
{
if (isFirstSonant(s, i))
a.Add(s.Substring(i, i + 2) + "_FIRST");
else
a.Add(s.Substring(i, i + 2) + "_SECOND");
i += 2;
continue;
}
if (sonant(s[i]) && ((i + 1) < s.Length && sonant(s[i]) || i == (s.Length - 1)))
{
if (isFirstSonant(s, i))
a.Add(s.Substring(i, i + 1) + "_FIRST");
else
a.Add(s.Substring(i, i + 1) + "_SECOND");
i++;
continue;
}
if (consonant(s[i]) && ((i + 1) < s.Length && consonant(s[i]) || i == (s.Length - 1)))
{
a.Add(s.Substring(i, i + 1) + "_SECOND");
i++;
continue;
}
}
return a;
}
I have made this program on java and want to do the same on C# so this is my code on java.
this is how i appended the sounds after, putting them in arraylist.
public AudioInputStream append(AudioInputStream main, String s) throws UnsupportedAudioFileException, IOException {
return new AudioInputStream(
new SequenceInputStream(main, find(s)),
main.getFormat(),
main.getFrameLength() + find(s).getFrameLength());
}
private String s;
public void Process() {
try {
AudioInputStream main = AudioSystem.getAudioInputStream(new File("C:/Users/Vato/Desktop/Programing/sintezatori/alphabet/blank.wav"));
ArrayList<String> aa = divide(s);
for(int ii=0;ii<aa.size();ii++) {
main=append(main, aa.get(ii));
System.out.println(aa.get(ii));
}
AudioSystem.write(main, AudioFileFormat.Type.WAVE, new File("C:/Users/Vato/Desktop/Programing/sintezatori/alphabet/result.wav"));
result=main;
AudioInputStream result1 = AudioSystem.getAudioInputStream(new File("C:/Users/Vato/Desktop/Programing/sintezatori/alphabet/result.wav"));
DataLine.Info info =
new DataLine.Info(Clip.class,
result1.getFormat());
Clip clip = (Clip) AudioSystem.getLine(info);
clip.open(result1);
clip.start();
} catch (Exception e) {
e.printStackTrace();
}
}
private AudioInputStream result;
public AudioInputStream getResult() {
return result;
}
Which method or class should i use from these http://msdn.microsoft.com/en-us/library/system.media.soundplayer.aspx ?
How can i do the same in C#?

If you don't want to use an existing SDK you could do something like the following:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Media;
using System.Text;
namespace ConsoleApplication3
{
public class SpeechClass
{
private Dictionary<char, string> _letterToFileMapping = new Dictionary<char, string>();
private string _basePath = "\\soundfiles";
public SpeechClass()
{
PopulateMappings();
}
private void PopulateMappings()
{
_letterToFileMapping.Add('a', "asound.wav");
_letterToFileMapping.Add('b', "bsound.wav");
_letterToFileMapping.Add('c', "csound.wav");
_letterToFileMapping.Add('d', "dsound.wav");
}
private void SayWord(string word)
{
var chars = word.ToCharArray();
List<string> filestosay = new List<string>();
foreach (var c in chars)
{
string sound;
if(_letterToFileMapping.TryGetValue(c, out sound))
{
filestosay.Add(sound);
}
}
foreach (string s in filestosay)
{
SoundPlayer p = new SoundPlayer();
p.SoundLocation = Path.Combine(_basePath, s);
p.Play();
}
}
}
}

The AT&T Text-To-Speech SDK is remarkable. You can do custom dictionaries and sounds. http://www.wizzardsoftware.com/text-to-speech-tts.php

Sound player should work:
using System.Media;
InitializeComponent();
Soundplayer MySounds = new SoundPlayer(#"C:\example.wav);
MySounds.Play();