2021-12-20 Wiederholung&Vertiefung

11 UebgKoordinaten_Di/Program.cs

@@ -10,13 +10,57 @@ namespace _11_UebgKoordinaten_Di
 
     struct Coord
     {
+        public double x, y;
+        public Coord(double X, double Y)
+        {
+            x = X;
+            y = Y;
+        }
+        public override string ToString() => $"Koordinate: ({x}|{y})";
 
     }
     class Program
     {
+        static double CoordDist(Coord p1, Coord p2)
+        {
+            double dx = p1.x - p2.x;
+            double dy = p1.y - p2.y;
+            return Math.Sqrt(dx * dx + dy * dy);
+        }
+        static void CoordMove(ref Coord p, double deltaX, double deltaY)
+        {
+            p.x += deltaX;
+            p.y += deltaY;
+        }
+        static Coord CoordMove(Coord p, double deltaX, double deltaY)
+        {
+            p.x += deltaX;
+            p.y += deltaY;
+            return p;
+        }
         static void Main(string[] args)
         {
-            Console.WriteLine();
+            Coord c1 = new Coord(1, 2);
+            Coord c2 = new Coord(3, 3);
+            Console.WriteLine(c1);
+            Console.WriteLine(c2);
+            Console.WriteLine(CoordDist(c1, c2));
+
+            CoordMove(ref c1, 4, 3);            // Referenzübergabe der Koord. c1
+            Console.WriteLine(c1);
+
+            Coord c3 = CoordMove(c1, 6, 5);     // Werteübergabe von c1, aber return liefert Ergebnis zurück
+            Console.WriteLine(c3);
+
+            Console.WriteLine(c3.ToString());
+
+            Coord[] coords = new Coord[5];
+            coords[0] = new Coord(1, 2);
+            coords[1] = new Coord(3, 3);
+
+            coords[3] = coords[0];              // Structs sind Wertetypen!
+            coords[0].x = -999;                 //   d.h. bei der Zuweisung wird eine KOPIE von coords[0] gespeichert
+            coords[0].y = -999;                 // bei Referenztypen (class) wird hingegen eine weitere Referenz gespeichert
         }
     }
 }

12 PW_Check (SoSe2019)/12 PW_Check (SoSe2019).csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>_12_PW_Check__SoSe2019_</RootNamespace>
+  </PropertyGroup>
+
+</Project>

12 PW_Check (SoSe2019)/Program.cs

+using System;
+
+namespace _12_PW_Check__SoSe2019_
+{
+// Erstellen Sie eine Funktion „PWCheck“, die für ein als String übergebenes Passwort überprüft, ob es
+// gewissen Anforderungen genügt.Ein Passwort muss
+//   mindestens 12 Zeichen lang sein UND
+//   mindestens einen Großbuchstaben enthalten UND
+//   mindestens eine Ziffer enthalten.
+// Die Funktion liefert true, wenn der übergebene String alle Anforderungen erfüllt, sonst false. 
+    class Program
+    {
+        static bool PWCheck(string passwort)
+        {
+            if (passwort.Length < 12)   // .Length ~ Anzahl der Zeichen des strings
+                                        // "AB" --> .Length = 2; Diese sind an Pos [0] und [1] gespeichert
+                return false;
+            //for (int i = 0; i < passwort.Length && (grossbuchstabe==false || ziffer==false); i++)
+            //{
+            //    char zeichen = passwort[i];
+            //}
+            bool grossbuchstabe = false, ziffer = false;
+            foreach (char  zeichen in passwort)             // D2ies_ist_2mein_Passwort
+            {
+                if (zeichen >= 'A' && zeichen <= 'Z')
+                    grossbuchstabe = true;
+                else if (zeichen >= '0' && zeichen <= '9')
+                    ziffer = true;
+                if (grossbuchstabe && ziffer)
+                    return true;
+            }
+            return false; // grossbuchstabe==true && ziffer==true;
+
+            //if (grossbuchstabe == true && ziffer == true)
+            //    return true;
+            //else
+            //    return false;
+
+        }
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

12 Params/12 Params.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>_12_Params</RootNamespace>
+  </PropertyGroup>
+
+</Project>

12 Params/Program.cs

+using System;
+
+namespace _12_Params
+{
+    class Program
+    {
+        static void DoIt(int x1, int x2) { }
+        static void DoIt(string s, params int[] xf)     // params ~ ermöglicht eine var. Anzahl an Parametern
+                                                        // alle Param. müssen vom angegebenen Typ sein
+        {
+            Console.WriteLine($"---------\nLänge: {xf.Length}");
+            foreach (int item in xf)
+            {
+                Console.WriteLine(item);
+            }
+        }
+
+        static void Main(string[] args)
+        {
+            int[] werte = { 1, 2, 3, 4, 5, 6, 7 };
+            DoIt(1, 2);
+            DoIt("Hallo", 2, 3);
+            DoIt("Hallo", new int[] { 2, 3 });
+            DoIt("Hallo", werte);
+
+            string s = "Dies ist ein Zeile, die es in sich hat!";
+            char[] separatorZeichen = { ' ', ',', '!' };
+            string[] sf = s.Split(separatorZeichen);       // Variable Anzahl an Parametern sinnvoll
+        }
+    }
+}

12 StringConcat/12 StringConcat.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>_12_StringConcat</RootNamespace>
+  </PropertyGroup>
+
+</Project>

12 StringConcat/Program.cs

+using System;
+
+namespace _12_StringConcat
+{
+    class Program
+    {
+        //  public static Bruch operator *(Bruch b1, Bruch b2)
+        //  public static string operator+ (string s1, string s2)
+
+        static void Main(string[] args)
+        {
+            Console.WriteLine("44" + 10 + 2);
+            Console.WriteLine("44" + (10 + 2));
+
+            int x = 1 + 2 + 3;  // (1 + 2) + 3
+            Console.WriteLine(("44" + 10) + 2);
+            // "44" + 10.ToString()  --> "44" + "10"  --> "4410"
+            // "4410" + 2.ToString() --> "4410" + "2" --> "44102"
+        }
+    }
+}

12 StructBruch/12 StructBruch.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>_12_StructBruch</RootNamespace>
+  </PropertyGroup>
+
+</Project>

12 StructBruch/Program.cs

+using System;
+
+namespace _12_StructBruch
+{
+    struct Bruch
+    {
+        public int zaehler, nenner;
+        public Bruch(int Zaehler, int Nenner) { zaehler = Zaehler;nenner = Nenner; }
+        public override string ToString() { return $"{zaehler}/{nenner}"; }
+        public static Bruch operator *(Bruch b1, Bruch b2)
+        => new Bruch(b1.zaehler * b2.zaehler, b1.nenner * b2.nenner);
+    }
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Bruch b1 = new Bruch(1, 2);
+            Bruch b2 = new Bruch(2, 3);
+
+            Console.WriteLine($"{b1.zaehler}/{b1.nenner}");
+            // :
+            Console.WriteLine($"{b2.zaehler}|{b2.nenner}");
+
+            Console.WriteLine(b1);
+            Console.WriteLine(b2);
+            string text = b1.ToString();
+            Console.WriteLine($"Als Text: {text}");
+
+            Bruch b3 = b1 * b2;
+            Console.WriteLine(b3);
+        }
+    }
+}

12 StructToString/12 StructToString.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>_12_StructToString</RootNamespace>
+  </PropertyGroup>
+
+</Project>

12 StructToString/Program.cs

+using System;
+
+namespace _12_StructToString
+{
+    struct Person
+    {
+        public string name, vorname;
+        public static string PersonToString(Person p) { return $"Name: {p.name}, Vorname: {p.vorname}"; }
+        //public static string ToString(Person p) { return $"Name: {p.name}, Vorname: {p.vorname}"; }
+        public override string ToString() { return $"Name: {name}, Vorname: {vorname}"; }
+    }
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Person p1 = new Person();
+            p1.name = "Müller";
+            p1.vorname = "Anton";
+
+            Console.WriteLine(p1);
+        }
+    }
+}

Prog1_WS2021_22.sln

@@ -107,11 +107,21 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "11 UebgKoordinatenMo", "11
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "11 Time", "11 Time\11 Time.csproj", "{A5C6305D-65D0-4B95-9884-F75E61BDD8E9}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "11 UebgKoordinaten_Di", "11 UebgKoordinaten_Di\11 UebgKoordinaten_Di.csproj", "{B1C38CF7-98C6-4696-990E-E590C24BCA46}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "11 UebgKoordinaten_Di", "11 UebgKoordinaten_Di\11 UebgKoordinaten_Di.csproj", "{B1C38CF7-98C6-4696-990E-E590C24BCA46}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "11 StructsPublicPrivate", "11 StructsPublicPrivate\11 StructsPublicPrivate.csproj", "{2A85F1F9-5C05-4905-BC7D-D9C836D10477}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "11 StructsPublicPrivate", "11 StructsPublicPrivate\11 StructsPublicPrivate.csproj", "{2A85F1F9-5C05-4905-BC7D-D9C836D10477}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "11 ThrowIntro", "11 ThrowIntro\11 ThrowIntro.csproj", "{055DDC53-EB6E-43B8-BED5-EC6BEDC87507}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "11 ThrowIntro", "11 ThrowIntro\11 ThrowIntro.csproj", "{055DDC53-EB6E-43B8-BED5-EC6BEDC87507}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "12 PW_Check (SoSe2019)", "12 PW_Check (SoSe2019)\12 PW_Check (SoSe2019).csproj", "{0EC7D975-1D95-40B7-BBDF-73A475231A1F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "12 Params", "12 Params\12 Params.csproj", "{4EBDD0DB-69AC-4D1D-8D52-20C01CA0EF1F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "12 StructToString", "12 StructToString\12 StructToString.csproj", "{D7CB06EE-32B9-499C-9AE7-4391D4AC6438}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "12 StructBruch", "12 StructBruch\12 StructBruch.csproj", "{D087E2B4-9E89-4456-ABB6-CCF348CB7E79}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "12 StringConcat", "12 StringConcat\12 StringConcat.csproj", "{B4191FF6-95B7-4577-AE98-9B42BC338F5A}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -339,6 +349,26 @@ Global
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 		{055DDC53-EB6E-43B8-BED5-EC6BEDC87507}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0EC7D975-1D95-40B7-BBDF-73A475231A1F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0EC7D975-1D95-40B7-BBDF-73A475231A1F}.Debug|Any CPU.Build.0 = Debug|Any CPU
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+		{0EC7D975-1D95-40B7-BBDF-73A475231A1F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4EBDD0DB-69AC-4D1D-8D52-20C01CA0EF1F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4EBDD0DB-69AC-4D1D-8D52-20C01CA0EF1F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4EBDD0DB-69AC-4D1D-8D52-20C01CA0EF1F}.Release|Any CPU.ActiveCfg = Release|Any CPU
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+		{D7CB06EE-32B9-499C-9AE7-4391D4AC6438}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D7CB06EE-32B9-499C-9AE7-4391D4AC6438}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D7CB06EE-32B9-499C-9AE7-4391D4AC6438}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D7CB06EE-32B9-499C-9AE7-4391D4AC6438}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D087E2B4-9E89-4456-ABB6-CCF348CB7E79}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D087E2B4-9E89-4456-ABB6-CCF348CB7E79}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D087E2B4-9E89-4456-ABB6-CCF348CB7E79}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D087E2B4-9E89-4456-ABB6-CCF348CB7E79}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B4191FF6-95B7-4577-AE98-9B42BC338F5A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B4191FF6-95B7-4577-AE98-9B42BC338F5A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B4191FF6-95B7-4577-AE98-9B42BC338F5A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B4191FF6-95B7-4577-AE98-9B42BC338F5A}.Release|Any CPU.Build.0 = Release|Any CPU
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 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE