diff --git a/Implementierung/main.c b/Implementierung/main.c
index 37b4a83..2ea9ffd 100644
--- a/Implementierung/main.c
+++ b/Implementierung/main.c
@@ -99,7 +99,6 @@ unsigned tests(void) {
     free(tempArrNotColored);
 
     return 0;
-    // run the tests
 } 
 
 
@@ -174,14 +173,14 @@ int main(int argc, char** argv)
     _Bool will_benchmark = false; // actual initial value
     _Bool will_test = false;
 
-    int amount_function_called = 0; // initial values, so that the compiler doesn't complain
+    int amount_function_called = -1; // initial values, so that the compiler doesn't complain
     unsigned n = 0;
-    float starting_point_real = 0;
-    float starting_point_imaginary = 0;
+    float starting_point_real = -1;
+    float starting_point_imaginary = -1;
     size_t width = 0;
-    ssize_t height = 0;
-    float resolution = 0;
-    char* output_data = 0;
+    ssize_t height = -1;
+    float resolution = -1;
+    char* output_data = NULL;
 
 
     opt_long = getopt_long(argc,argv,optstring, long_options, NULL);