open file and read first numbers and verification word

Startcode/imageInput.c

@@ -7,11 +7,49 @@
 #define FILE_HEADER_STRING "__info2_image_file_format__"
 
 // TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
+GrayScaleImage *readSingleImage(size_t widht, size_t height) {
+    
+}
+
 
 // TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
 GrayScaleImageSeries *readImages(const char *path)
 {
     GrayScaleImageSeries *series = NULL;
+    unsigned short NumberOfImages;
+    unsigned short PictureWidth;
+    unsigned short PictureHeight;
+    char* verifyWord;
+    size_t bufferCount = 0;
+    
+    FILE *file = fopen("mnist_test.info2", "rb"); // opening the file
+    
+    bufferCount = fread(&verifyWord, 27, 1, file);
+    if (bufferCount != 1 || verifyWord != FILE_HEADER_STRING) {
+        strerror("Error: wrong file or unable to read the file!");
+        // return error code;
+    }
+
+    bufferCount = 0;
+    bufferCount = fread(&NumberOfImages, 2, 1, file);
+    if (bufferCount != 1) {
+        strerror("Error: failed to read number of pictures");
+        // return error code
+    }
+
+    bufferCount = 0;
+    bufferCount = fread(&PictureWidth, 2, 1, file);
+    if (bufferCount != 1) {
+        strerror("Error: failed to read the picture width!");
+        // return error code
+    }
+
+    bufferCount = 0;
+    bufferCount = fread(&PictureHeight, 2, 1, file);
+    if (bufferCount != 1) {
+        strerror("Error: failed to read the picture height!");
+        // return error code
+    }
 
     return series;
 }