diff --git a/imageInput.c b/imageInput.c
index bb27f0b..6eb7ecf 100644
--- a/imageInput.c
+++ b/imageInput.c
@@ -10,8 +10,8 @@
 // übersichtlich aufgeteilt werden!
 
 // TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
-int readStatusInfo(FILE **source, char *const headerString, unsigned int *const imageCount, int *const imageWidth, int *const imageHeight, int const amountToRead);
-void readImagedata(FILE **source, char *const imageBuffer, char *const labelBuffer,int const imageCount ,int const amountToRead);
+int readStatusInfo(FILE **source, char *const headerString, unsigned int *const imageCount, unsigned int *const imageWidth, unsigned int *const imageHeight, int const amountToRead);
+void readImagedata(FILE **source, unsigned char *const imageBuffer, unsigned char *const labelBuffer,int const imageCount ,int const amountToRead);
 
 
 // TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
@@ -21,7 +21,6 @@ GrayScaleImageSeries *readImages(const char *path)
 
     // selbst geschriebene Variablen
     FILE                    *readSource;
-    int                     i                           = 0;
     unsigned int            numberOfBytesToRead         = 0;
     const unsigned int      amountOfStatusInfoToRead    = 1;
     char                    headerString[sizeof("__info2_image_file_format__")];
@@ -31,7 +30,7 @@ GrayScaleImageSeries *readImages(const char *path)
 
     if (readSource != NULL)
     {
-
+        printf("hier\n");
         numberOfBytesToRead = readStatusInfo(&readSource, headerString, &series->count, &series->images->width, &series->images->height, amountOfStatusInfoToRead);
         
         series->images->buffer  = calloc((series->count) * numberOfBytesToRead, sizeof(GrayScalePixelType));
@@ -80,7 +79,7 @@ void clearSeries(GrayScaleImageSeries *series)
 
 
 //  reads string, pictureCount, pictureWidth, pictureHight
-int readStatusInfo(FILE **source, char *const headerString, unsigned int *const imageCount, int *const imageWidth, int *const imageHeight, int const amountToRead)
+int readStatusInfo(FILE **source, char *const headerString, unsigned int *const imageCount, unsigned int *const imageWidth, unsigned int *const imageHeight, int const amountToRead)
 {
     int bytesToRead = 0;
 
@@ -95,7 +94,7 @@ int readStatusInfo(FILE **source, char *const headerString, unsigned int *const
 }
 
 //  reads the imagebytes and the label of all images
-void readImagedata(FILE **source, char *const imageBuffer, char *const labelBuffer,int const imageCount ,  int const amountOfBytes)
+void readImagedata(FILE **source, unsigned char *const imageBuffer, unsigned char *const labelBuffer,int const imageCount ,  int const amountOfBytes)
 {
     int i = 0;