From 52e25f6feceb936e3c636f6bc05383177d7a2572 Mon Sep 17 00:00:00 2001
From: Marike Berger <bergerma98875@th-nuernberg.de>
Date: Sat, 8 Nov 2025 18:33:54 +0100
Subject: [PATCH 1/6] =?UTF-8?q?imageInput.c:=20Verbesserungen=20an=20getIn?=
 =?UTF-8?q?formationOfImages=20vorgenommen=20getGrayScalePixelOfImage=20un?=
 =?UTF-8?q?d=20getLabelOfImage=20Tests=20laufen=20auf=20Fehler,=20m=C3=BCs?=
 =?UTF-8?q?sen=20noch=20behoben=20werden?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 info2praktikum-neuronalesnetz/imageInput.c | 84 ++++++++++++++++++++--
 1 file changed, 77 insertions(+), 7 deletions(-)

diff --git a/info2praktikum-neuronalesnetz/imageInput.c b/info2praktikum-neuronalesnetz/imageInput.c
index 8e5a2de..9a4e115 100644
--- a/info2praktikum-neuronalesnetz/imageInput.c
+++ b/info2praktikum-neuronalesnetz/imageInput.c
@@ -26,17 +26,25 @@ static FILE* openImageFile(const char* path) {
     // Speicherplatz freigeben
     free(fileHeaderString);
 
+    if (imageFile == NULL) {
+        printf("Unbekannter Fehler, imageFile ist Null");
+        return NULL;
+    }
+
     return imageFile;
 }
 
 static int getInformationOfImages(FILE* imageFile, int dimensionsOfImages[], GrayScaleImageSeries *series) {
-    // Speicher für die drei Zahlen + Nullterminator (je Zahl 2 Byte)
-    char bytestream[7];
-    bytestream[6] = '\0';
+    // Speicher für die drei Zahlen (je Zahl 2 Byte)
+    unsigned char bytestream[6];
 
     // Daten einlesen
     int itemsRead = fread(bytestream, 2, 3, imageFile);
 
+    //for (size_t i = 0; i < (itemsRead * 2); i++) {
+    //    printf("%02X ", bytestream[i]);
+    //}
+
     if (itemsRead != 3) {
         // Nicht genügend Daten gelesen
         return -1;
@@ -54,6 +62,40 @@ static int getInformationOfImages(FILE* imageFile, int dimensionsOfImages[], Gra
     return 0;
 }
 
+static int getGrayScalePixelOfImage(FILE* imageFile, GrayScaleImage* image) {
+    // SPeicher für Buffer allokieren
+    image->buffer = malloc(image->width * image->height * sizeof(GrayScalePixelType));
+
+    // Pixelwerte aus Datei auslesen
+    int itemsRead = fread(image->buffer, 1, image->width * image->height * sizeof(GrayScalePixelType), imageFile);
+
+    if (itemsRead != image->width * image->height) {
+        free(image->buffer);
+        return -1;
+    }
+
+    return 0;
+}
+
+static unsigned char getLabelOfImage(FILE* imageFile, GrayScaleImage* image) {
+    // Array um Label zu speichern
+    unsigned char *bytestream = malloc(1);
+
+    // Label aus Datei auslesen
+    int itemsRead = fread(bytestream, 1, 1, imageFile);
+
+    if (itemsRead != 1) {
+        free(bytestream);
+        return -1;
+    }
+
+    unsigned char label = bytestream[0];
+
+    free(bytestream);
+
+    return label;
+}
+
 // TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
 GrayScaleImageSeries *readImages(const char *path)
 {
@@ -62,7 +104,7 @@ GrayScaleImageSeries *readImages(const char *path)
     FILE* imageFile = openImageFile(path);
 
     if (imageFile == NULL) {
-        printf("Unbekannter Fehler");
+        printf("Unbekannter Fehler, imageFile ist Null");
         return NULL;
     }
 
@@ -75,20 +117,48 @@ GrayScaleImageSeries *readImages(const char *path)
     // 2) Breite der Bilder --> width
     // 3) Höhe der Bilder --> height
     int dimensionsOfImages[2];
-    getInformationOfImages(imageFile, dimensionsOfImages, series);
+    int erfolg = getInformationOfImages(imageFile, dimensionsOfImages, series);
 
+    if (erfolg == -1) {
+        printf("Unbekannter Fehler bei getInformationOfImages.");
+    }
+
+    // Speicher für die Labels vorbereiten, wird später Bild für Bild befüllt
+    series->labels = malloc(series->count * sizeof(unsigned char));
     // labels = unsigned char-Array mit der Größe wie AnzahlBilder
 
-    // Springe in der Datei an die Stelle nach den drei Zahlen
+    if (series->labels == NULL) {
+        printf("Fehler bei malloc");
+        return NULL;
+    }
+
+    for (int i = 0; i < series->count; i++) {
+        // image initialisieren
+        GrayScaleImage *image = NULL;
+        image = (GrayScaleImage *)malloc(sizeof(GrayScaleImage));
+
+        image->width = dimensionsOfImages[0];
+        image->height = dimensionsOfImages[1];
+
+        if(getGrayScalePixelOfImage(imageFile, image) != 0) {
+            printf("Fehler bei getGrayScalePixelOfImage");
+        }
+
+        series->labels[i] = getLabelOfImage(imageFile, image);
+
+        if (series->labels[i] == -1) {
+            printf("Fehler bei getLabelOfImage");
+        }
+    }
 
     // für jedes Bild gemäß GreyScaleImageSeries.count:
         // GreyScaleImage.width = width
         // GreyScaleImage.height = height
         // GreyScaleImageSeries.buffer = Pixelwerte
         // labels = Label des Bilds
+        // series.labels[i] = (unsigned char)(i % 256);
         // Springe in der Datei an die Stelle nach dem i. Bild
 
-    // GrayScaleImageSeries.labels = labels (mit strcpy)
 
     return series;
 }

From 6d5b19eb76443ef441078ea36a836cf8dd451ada Mon Sep 17 00:00:00 2001
From: Marike Berger <bergerma98875@th-nuernberg.de>
Date: Sat, 8 Nov 2025 19:34:04 +0100
Subject: [PATCH 2/6] Weitere Verbesserungen an imageInput.c vorgenommen. Tests
 schlagen weiterhin fehl

---
 info2praktikum-neuronalesnetz/imageInput.c | 68 ++++++++++++++++------
 1 file changed, 51 insertions(+), 17 deletions(-)

diff --git a/info2praktikum-neuronalesnetz/imageInput.c b/info2praktikum-neuronalesnetz/imageInput.c
index 9a4e115..e22a486 100644
--- a/info2praktikum-neuronalesnetz/imageInput.c
+++ b/info2praktikum-neuronalesnetz/imageInput.c
@@ -12,25 +12,26 @@ static FILE* openImageFile(const char* path) {
     FILE* imageFile = NULL;
     imageFile = fopen(path, "rb");
 
+    if (imageFile == NULL) {
+        // Fehler beim Öffnen
+        return NULL;
+    }
+
     // Prüfe, ob die Datei mit dem richtigen String beginnt
     char *fileHeaderString = (char*)malloc(BUFFER_SIZE);
-    fread(fileHeaderString, 1, (BUFFER_SIZE - 1), imageFile);
+    fread(fileHeaderString, 1, strlen(FILE_HEADER_STRING) + 1, imageFile);
 
     if (strncmp(fileHeaderString, FILE_HEADER_STRING, 27)) {
         // Datei hat nicht das korrekte Format
         // Speicherplatz freigeben
     	free(fileHeaderString);
+        fclose(imageFile);
         return NULL;
     }
 
     // Speicherplatz freigeben
     free(fileHeaderString);
 
-    if (imageFile == NULL) {
-        printf("Unbekannter Fehler, imageFile ist Null");
-        return NULL;
-    }
-
     return imageFile;
 }
 
@@ -64,12 +65,14 @@ static int getInformationOfImages(FILE* imageFile, int dimensionsOfImages[], Gra
 
 static int getGrayScalePixelOfImage(FILE* imageFile, GrayScaleImage* image) {
     // SPeicher für Buffer allokieren
-    image->buffer = malloc(image->width * image->height * sizeof(GrayScalePixelType));
+    image->buffer = malloc(image->width * image->height);
+
+    size_t expectedItems = (size_t)image->width * image->height; // Anzahl der Pixel/Bytes
 
     // Pixelwerte aus Datei auslesen
-    int itemsRead = fread(image->buffer, 1, image->width * image->height * sizeof(GrayScalePixelType), imageFile);
+    int itemsRead = fread(image->buffer, sizeof(GrayScalePixelType), expectedItems, imageFile);
 
-    if (itemsRead != image->width * image->height) {
+    if (itemsRead != expectedItems) {
         free(image->buffer);
         return -1;
     }
@@ -77,7 +80,7 @@ static int getGrayScalePixelOfImage(FILE* imageFile, GrayScaleImage* image) {
     return 0;
 }
 
-static unsigned char getLabelOfImage(FILE* imageFile, GrayScaleImage* image) {
+static char getLabelOfImage(FILE* imageFile, GrayScaleImage* image) {
     // Array um Label zu speichern
     unsigned char *bytestream = malloc(1);
 
@@ -121,6 +124,8 @@ GrayScaleImageSeries *readImages(const char *path)
 
     if (erfolg == -1) {
         printf("Unbekannter Fehler bei getInformationOfImages.");
+        fclose(imageFile);
+        return NULL;
     }
 
     // Speicher für die Labels vorbereiten, wird später Bild für Bild befüllt
@@ -128,26 +133,54 @@ GrayScaleImageSeries *readImages(const char *path)
     // labels = unsigned char-Array mit der Größe wie AnzahlBilder
 
     if (series->labels == NULL) {
-        printf("Fehler bei malloc");
+        printf("Fehler: Speicherzuweisung für labels fehlgeschlagen.\n");
+        free(series);
+        fclose(imageFile);
+        return NULL;
+    }
+
+    // Speicher für das Array von GrayScaleImage-Strukturen vorbereiten
+    series->images = malloc(series->count * sizeof(GrayScaleImage));
+    if (series->images == NULL) {
+        printf("Fehler: Speicherzuweisung für images fehlgeschlagen.\n");
+        free(series->labels); // Zuerst labels freigeben
+        free(series);
+        fclose(imageFile);
         return NULL;
     }
 
     for (int i = 0; i < series->count; i++) {
         // image initialisieren
-        GrayScaleImage *image = NULL;
-        image = (GrayScaleImage *)malloc(sizeof(GrayScaleImage));
+        GrayScaleImage *image = &series->images[i];
+        // image = (GrayScaleImage *)malloc(sizeof(GrayScaleImage));
 
         image->width = dimensionsOfImages[0];
         image->height = dimensionsOfImages[1];
+        image->buffer = NULL;
 
+        // Graustufe-Pixel lesen und im image speichern
         if(getGrayScalePixelOfImage(imageFile, image) != 0) {
-            printf("Fehler bei getGrayScalePixelOfImage");
+            printf("Fehler: Konnte Pixel des Bildes %d nicht lesen.\n", i + 1);
+            fclose(imageFile);
+            clearSeries(series);
+            return NULL;
         }
 
-        series->labels[i] = getLabelOfImage(imageFile, image);
+        // label lesen und in der series an entsprechender Stelle speichern
+        int labelResult = getLabelOfImage(imageFile, image);
+        if (labelResult == -1) {
+            printf("Fehler: Konnte Label des Bildes %d nicht lesen.\n", i);
+            fclose(imageFile);
+            clearSeries(series);
+            return NULL;
+        }
+        series->labels[i] = (unsigned char)labelResult;
 
-        if (series->labels[i] == -1) {
-            printf("Fehler bei getLabelOfImage");
+        if (series->images == NULL) {
+            printf("Fehler bei malloc für images");
+            free(series->labels); // Labels freigeben
+            free(series);        // Serie freigeben
+            return NULL;
         }
     }
 
@@ -159,6 +192,7 @@ GrayScaleImageSeries *readImages(const char *path)
         // series.labels[i] = (unsigned char)(i % 256);
         // Springe in der Datei an die Stelle nach dem i. Bild
 
+    fclose(imageFile);
 
     return series;
 }

From d354b45396376a81ee1285a5bd58e087d06a39c2 Mon Sep 17 00:00:00 2001
From: Laila <muellerla101249@th-nuernberg.de>
Date: Sun, 9 Nov 2025 22:54:09 +0100
Subject: [PATCH 3/6] getMatrixAt und multiply

---
 info2praktikum-neuronalesnetz/matrix.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/info2praktikum-neuronalesnetz/matrix.c b/info2praktikum-neuronalesnetz/matrix.c
index 75c311b..af5a474 100644
--- a/info2praktikum-neuronalesnetz/matrix.c
+++ b/info2praktikum-neuronalesnetz/matrix.c
@@ -34,7 +34,12 @@ void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned
 
 MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    
+    if(rowIdx > matrix.rows || colIdx > matrix.cols){
+      return 0;
+      }
+    MatrixType value;
+    value = matrix.data[rowIdx * matrix.cols + colIdx];
+    return value;
 }
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
@@ -44,7 +49,24 @@ Matrix add(const Matrix matrix1, const Matrix matrix2)
 
 Matrix multiply(const Matrix matrix1, const Matrix matrix2)
 {
-    
+    if (matrix1.cols != matrix2.rows){
+      Matrix errorMatrix = createMatrix(0, 0);
+      errorMatrix.data = NULL;
+      return errorMatrix;
+      }
+    Matrix matrix3 = createMatrix(matrix1.rows, matrix2.cols);
+
+    for( size_t i = 0; i < matrix1.rows; i++){
+      for(size_t j = 0; j < matrix2.cols; j++){
+        MatrixType sum = 0;
+        for(size_t k = 0; k < matrix1.cols; k++){
+          sum += getMatrixAt(matrix1, i, k) * getMatrixAt(matrix2, k, j);
+        }
+        setMatrixAt(sum, matrix3, i, j);
+      }
+    }
+
+    return matrix3;
 }
 
 

From 147fd28bda6d425efdeecb6e92abfb124425856c Mon Sep 17 00:00:00 2001
From: Laila <muellerla101249@th-nuernberg.de>
Date: Sun, 9 Nov 2025 23:27:21 +0100
Subject: [PATCH 4/6] setMatrixAt

---
 info2praktikum-neuronalesnetz/matrix.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/info2praktikum-neuronalesnetz/matrix.c b/info2praktikum-neuronalesnetz/matrix.c
index af5a474..16688c5 100644
--- a/info2praktikum-neuronalesnetz/matrix.c
+++ b/info2praktikum-neuronalesnetz/matrix.c
@@ -27,14 +27,17 @@ void clearMatrix(Matrix *matrix)
 
   }
 
-void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
+void setMatrixAt(MatrixType value, Matrix* matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    
+    if(rowIdx >= matrix->rows || colIdx >= matrix->cols){
+      return;
+    }
+    matrix->data[rowIdx * matrix->cols + colIdx] = value;
 }
 
 MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    if(rowIdx > matrix.rows || colIdx > matrix.cols){
+    if(rowIdx >= matrix.rows || colIdx >= matrix.cols){
       return 0;
       }
     MatrixType value;
@@ -62,7 +65,7 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
         for(size_t k = 0; k < matrix1.cols; k++){
           sum += getMatrixAt(matrix1, i, k) * getMatrixAt(matrix2, k, j);
         }
-        setMatrixAt(sum, matrix3, i, j);
+        setMatrixAt(sum, &matrix3, i, j);
       }
     }
 

From bb87d30e056ca91ea81f993e7630cf154ba1d46b Mon Sep 17 00:00:00 2001
From: Laila <muellerla101249@th-nuernberg.de>
Date: Mon, 10 Nov 2025 13:43:55 +0100
Subject: [PATCH 5/6] =?UTF-8?q?matrix.data=20zu=20matrix.buffer=20umgenann?=
 =?UTF-8?q?t,=20da=20Tests=20diese=20Bezeichnung=20erwarten.=20Test=20f?=
 =?UTF-8?q?=C3=BCr=20get,=20set=20und=20multiply=20laufen=20PASS?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 info2praktikum-neuronalesnetz/matrix.c | 22 +++++++++++-----------
 info2praktikum-neuronalesnetz/matrix.h |  2 +-
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/info2praktikum-neuronalesnetz/matrix.c b/info2praktikum-neuronalesnetz/matrix.c
index 16688c5..6e38675 100644
--- a/info2praktikum-neuronalesnetz/matrix.c
+++ b/info2praktikum-neuronalesnetz/matrix.c
@@ -10,8 +10,8 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
   Matrix matrix;
   matrix.rows = rows;
   matrix.cols = cols;
-  matrix.data = (float *)malloc(rows * cols * sizeof(MatrixType));
-  if (matrix.data != NULL) {
+  matrix.buffer = (float *)malloc(rows * cols * sizeof(MatrixType));
+  if (matrix.buffer != NULL) {
 
   }
   return matrix;
@@ -19,20 +19,20 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
 
 void clearMatrix(Matrix *matrix)
 {
-  if (matrix->data != NULL) {
-      free(matrix->data);
-    matrix->data = NULL;
+  if (matrix->buffer != NULL) {
+      free(matrix->buffer);
+    matrix->buffer = NULL;
 
   }
 
   }
 
-void setMatrixAt(MatrixType value, Matrix* matrix, unsigned int rowIdx, unsigned int colIdx)
+void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    if(rowIdx >= matrix->rows || colIdx >= matrix->cols){
+    if(rowIdx >= matrix.rows || colIdx >= matrix.cols){
       return;
     }
-    matrix->data[rowIdx * matrix->cols + colIdx] = value;
+    matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
 }
 
 MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
@@ -41,7 +41,7 @@ MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int co
       return 0;
       }
     MatrixType value;
-    value = matrix.data[rowIdx * matrix.cols + colIdx];
+    value = matrix.buffer[rowIdx * matrix.cols + colIdx];
     return value;
 }
 
@@ -54,7 +54,7 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
 {
     if (matrix1.cols != matrix2.rows){
       Matrix errorMatrix = createMatrix(0, 0);
-      errorMatrix.data = NULL;
+      errorMatrix.buffer = NULL;
       return errorMatrix;
       }
     Matrix matrix3 = createMatrix(matrix1.rows, matrix2.cols);
@@ -65,7 +65,7 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
         for(size_t k = 0; k < matrix1.cols; k++){
           sum += getMatrixAt(matrix1, i, k) * getMatrixAt(matrix2, k, j);
         }
-        setMatrixAt(sum, &matrix3, i, j);
+        setMatrixAt(sum, matrix3, i, j);
       }
     }
 
diff --git a/info2praktikum-neuronalesnetz/matrix.h b/info2praktikum-neuronalesnetz/matrix.h
index 0598348..8c75533 100644
--- a/info2praktikum-neuronalesnetz/matrix.h
+++ b/info2praktikum-neuronalesnetz/matrix.h
@@ -6,7 +6,7 @@
 typedef struct{
   size_t rows;
   size_t cols;
-  float* data;
+  float* buffer;
  } Matrix;
 
 

From 9623be321f3bbef7e3ba83c156f67401a12414f7 Mon Sep 17 00:00:00 2001
From: wehnerla99053 <wehnerla99053@th-nuernberg.de>
Date: Mon, 10 Nov 2025 14:06:21 +0100
Subject: [PATCH 6/6] addMatrix und clearMatrix

---
 .idea/editor.xml                       | 240 +++++++++++++++++++++++++
 info2praktikum-neuronalesnetz/matrix.c |  46 +++--
 2 files changed, 271 insertions(+), 15 deletions(-)

diff --git a/.idea/editor.xml b/.idea/editor.xml
index dc36d98..193436d 100644
--- a/.idea/editor.xml
+++ b/.idea/editor.xml
@@ -341,5 +341,245 @@
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_BEFORE_TERNARY_OPSIGNS/@EntryValue" value="true" type="bool" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_PARAMETERS_STYLE/@EntryValue" value="WRAP_IF_LONG" type="string" />
     <option name="/Default/CodeStyle/EditorConfig/EnableClangFormatSupport/@EntryValue" value="false" type="bool" />
+    <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/FREE_BLOCK_BRACES/@EntryValue" value="END_OF_LINE" type="string" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppSmartPointerVsMakeFunction/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppCStyleCast/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppFunctionalStyleCast/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppReinterpretCastFromVoidPtr/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppNonExplicitConvertingConstructor/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppNonExplicitConversionOperator/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppDiscardedPostfixOperatorResult/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppConstValueFunctionReturnType/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppMemberFunctionMayBeConst/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppMemberFunctionMayBeStatic/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppLocalVariableMayBeConst/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppParameterMayBeConst/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppVariableCanBeMadeConstexpr/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppParameterMayBeConstPtrOrRef/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppPassValueParameterByConstReference/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppThrowExpressionCanBeReplacedWithRethrow/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppZeroConstantCanBeReplacedWithNullptr/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppCompileTimeConstantCanBeReplacedWithBooleanConstant/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppIfCanBeReplacedByConstexprIf/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=IfStdIsConstantEvaluatedCanBeReplaced/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=StdIsConstantEvaluatedWillAlwaysEvaluateToConstant/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=ConstevalIfIsAlwaysConstant/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppClassCanBeFinal/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseStructuredBinding/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseTypeTraitAlias/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseAlgorithmWithCount/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseRangeAlgorithm/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseElementsView/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseStdSize/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppForLoopCanBeReplacedWithWhile/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppJoinDeclarationAndAssignment/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppReplaceTieWithStructuredBinding/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppReplaceMemsetWithZeroInitialization/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseAssociativeContains/@EntryIndexRemoved" />
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+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppDFAUnusedValue/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppDFAUnreadVariable/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppDFATimeOver/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppInconsistentNaming/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=StringLiteralTypo/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CommentTypo/@EntryIndexRemoved" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=IdentifierTypo/@EntryIndexRemoved" />
   </component>
 </project>
\ No newline at end of file
diff --git a/info2praktikum-neuronalesnetz/matrix.c b/info2praktikum-neuronalesnetz/matrix.c
index 6e38675..cf6fe65 100644
--- a/info2praktikum-neuronalesnetz/matrix.c
+++ b/info2praktikum-neuronalesnetz/matrix.c
@@ -10,29 +10,31 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
   Matrix matrix;
   matrix.rows = rows;
   matrix.cols = cols;
-  matrix.buffer = (float *)malloc(rows * cols * sizeof(MatrixType));
-  if (matrix.buffer != NULL) {
+  matrix.data = (float *)malloc(rows * cols * sizeof(MatrixType));
+  if (matrix.data != NULL) {
 
   }
   return matrix;
 }
 
+
 void clearMatrix(Matrix *matrix)
 {
-  if (matrix->buffer != NULL) {
-      free(matrix->buffer);
-    matrix->buffer = NULL;
-
+  if (matrix->data != NULL) {
+    free(matrix->data);
+    matrix->data = NULL;
   }
+  matrix->rows = 0;
+  matrix->cols = 0;
+}
 
-  }
 
-void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
+void setMatrixAt(MatrixType value, Matrix* matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    if(rowIdx >= matrix.rows || colIdx >= matrix.cols){
+    if(rowIdx >= matrix->rows || colIdx >= matrix->cols){
       return;
     }
-    matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
+    matrix->data[rowIdx * matrix->cols + colIdx] = value;
 }
 
 MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
@@ -41,20 +43,34 @@ MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int co
       return 0;
       }
     MatrixType value;
-    value = matrix.buffer[rowIdx * matrix.cols + colIdx];
+    value = matrix.data[rowIdx * matrix.cols + colIdx];
     return value;
 }
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
 {
-    
-}
+    if (matrix1.rows != matrix2.rows || matrix1.cols != matrix2.cols) { // Matrixen können nur addiert werden, sofern sie jeweils die gleiche Anzahl Spalten und Zeilen haben
+      Matrix errorMatrix = createMatrix(0, 0);
+      errorMatrix.data = NULL;
+      return errorMatrix;
+    }
+
+    Matrix result = createMatrix(matrix1.rows, matrix1.cols);
+    for (unsigned int i = 0; i < matrix1.rows; i++) {
+      for (unsigned int j = 0; j < matrix1.cols; j++) {
+        MatrixType sum = getMatrixAt(matrix1, i, j) + getMatrixAt(matrix2, i, j);
+        setMatrixAt(sum, &result, i, j);
+      }
+    }
+    return result;
+  }
+
 
 Matrix multiply(const Matrix matrix1, const Matrix matrix2)
 {
     if (matrix1.cols != matrix2.rows){
       Matrix errorMatrix = createMatrix(0, 0);
-      errorMatrix.buffer = NULL;
+      errorMatrix.data = NULL;
       return errorMatrix;
       }
     Matrix matrix3 = createMatrix(matrix1.rows, matrix2.cols);
@@ -65,7 +81,7 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
         for(size_t k = 0; k < matrix1.cols; k++){
           sum += getMatrixAt(matrix1, i, k) * getMatrixAt(matrix2, k, j);
         }
-        setMatrixAt(sum, matrix3, i, j);
+        setMatrixAt(sum, &matrix3, i, j);
       }
     }