diff --git a/build/test/cache/input.yml b/build/test/cache/input.yml
index 3a17ccd..eefbd61 100644
--- a/build/test/cache/input.yml
+++ b/build/test/cache/input.yml
@@ -77,10 +77,10 @@
   :testfail: ".fail"
   :dependencies: ".d"
 :unity:
-  :vendor_path: "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor"
+  :vendor_path: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor
   :defines: []
 :cmock:
-  :vendor_path: "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor"
+  :vendor_path: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor
   :defines: []
   :includes: []
   :mock_prefix: mock_
@@ -99,14 +99,14 @@
   :verbosity: 3
   :unity_helper: false
 :cexception:
-  :vendor_path: "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor"
+  :vendor_path: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor
   :defines: []
 :test_runner:
   :includes: []
   :file_suffix: _runner
 :tools:
   :test_compiler:
-    :executable: gcc
+    :executable: gcc.exe
     :name: default_test_compiler
     :stderr_redirect: :none
     :background_exec: :none
@@ -132,7 +132,7 @@
     :optional: false
     :arguments: []
   :test_linker:
-    :executable: gcc
+    :executable: gcc.exe
     :name: default_test_linker
     :stderr_redirect: :none
     :background_exec: :none
@@ -148,7 +148,7 @@
     - "${4}"
     - ''
   :test_file_preprocessor:
-    :executable: gcc
+    :executable: gcc.exe
     :name: default_test_file_preprocessor
     :stderr_redirect: :none
     :background_exec: :none
@@ -165,7 +165,7 @@
     - '"${1}"'
     - -o "${2}"
   :test_file_preprocessor_directives:
-    :executable: gcc
+    :executable: gcc.exe
     :name: default_test_file_preprocessor_directives
     :stderr_redirect: :none
     :background_exec: :none
@@ -181,7 +181,7 @@
     - '"${1}"'
     - -o "${2}"
   :test_includes_preprocessor:
-    :executable: gcc
+    :executable: gcc.exe
     :name: default_test_includes_preprocessor
     :stderr_redirect: :none
     :background_exec: :none
@@ -223,13 +223,13 @@
   :arguments: []
 :plugins:
   :load_paths:
-  - "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/lib/../plugins"
+  - C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/lib/../plugins
   :enabled:
   - stdout_pretty_tests_report
   - module_generator
   :display_raw_test_results: false
-  :stdout_pretty_tests_report_path: "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/lib/../plugins/stdout_pretty_tests_report"
-  :module_generator_path: "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/lib/../plugins/module_generator"
+  :stdout_pretty_tests_report_path: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/lib/../plugins/stdout_pretty_tests_report
+  :module_generator_path: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/lib/../plugins/module_generator
 :gcov:
   :reports:
   - HtmlDetailed
diff --git a/build/test/dependencies/cmock.d b/build/test/dependencies/cmock.d
index 7d1cf5d..bdf4cc9 100644
--- a/build/test/dependencies/cmock.d
+++ b/build/test/dependencies/cmock.d
@@ -1,6 +1,6 @@
 build/test/out/c/cmock.o: \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock.c \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock_internals.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock.c \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock_internals.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/force_build b/build/test/dependencies/force_build
new file mode 100644
index 0000000..e69de29
diff --git a/build/test/dependencies/test_casualQuiz_runner.d b/build/test/dependencies/test_casualQuiz_runner.d
index 636c727..7d14e54 100644
--- a/build/test/dependencies/test_casualQuiz_runner.d
+++ b/build/test/dependencies/test_casualQuiz_runner.d
@@ -1,4 +1,4 @@
 build/test/out/c/test_casualQuiz_runner.o: \
  build/test/runners/test_casualQuiz_runner.c \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/test_quizduell_runner.d b/build/test/dependencies/test_quizduell_runner.d
index 39185b6..44b7475 100644
--- a/build/test/dependencies/test_quizduell_runner.d
+++ b/build/test/dependencies/test_quizduell_runner.d
@@ -1,4 +1,4 @@
 build/test/out/c/test_quizduell_runner.o: \
  build/test/runners/test_quizduell_runner.c \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/test_timequiz_runner.d b/build/test/dependencies/test_timequiz_runner.d
index de707f2..bf1976a 100644
--- a/build/test/dependencies/test_timequiz_runner.d
+++ b/build/test/dependencies/test_timequiz_runner.d
@@ -1,4 +1,4 @@
 build/test/out/c/test_timequiz_runner.o: \
  build/test/runners/test_timequiz_runner.c \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/test_wwm_runner.d b/build/test/dependencies/test_wwm_runner.d
index 6594640..d12ff22 100644
--- a/build/test/dependencies/test_wwm_runner.d
+++ b/build/test/dependencies/test_wwm_runner.d
@@ -1,3 +1,3 @@
 build/test/out/c/test_wwm_runner.o: build/test/runners/test_wwm_runner.c \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/unity.d b/build/test/dependencies/unity.d
index e42504d..0baf56c 100644
--- a/build/test/dependencies/unity.d
+++ b/build/test/dependencies/unity.d
@@ -1,4 +1,4 @@
 build/test/out/c/unity.o: \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.c \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
- /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.c \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/out/c/cmock.o b/build/test/out/c/cmock.o
index 223fe71..44a2da6 100644
Binary files a/build/test/out/c/cmock.o and b/build/test/out/c/cmock.o differ
diff --git a/build/test/out/c/test_casualQuiz.o b/build/test/out/c/test_casualQuiz.o
index 056d894..be1fc53 100644
Binary files a/build/test/out/c/test_casualQuiz.o and b/build/test/out/c/test_casualQuiz.o differ
diff --git a/build/test/out/c/test_casualQuiz_runner.o b/build/test/out/c/test_casualQuiz_runner.o
index 9291cc5..6d35d14 100644
Binary files a/build/test/out/c/test_casualQuiz_runner.o and b/build/test/out/c/test_casualQuiz_runner.o differ
diff --git a/build/test/out/c/test_quizduell.o b/build/test/out/c/test_quizduell.o
index d320de5..90fbcaa 100644
Binary files a/build/test/out/c/test_quizduell.o and b/build/test/out/c/test_quizduell.o differ
diff --git a/build/test/out/c/test_quizduell_runner.o b/build/test/out/c/test_quizduell_runner.o
index f255dc5..41887ac 100644
Binary files a/build/test/out/c/test_quizduell_runner.o and b/build/test/out/c/test_quizduell_runner.o differ
diff --git a/build/test/out/c/test_timequiz.o b/build/test/out/c/test_timequiz.o
index 44d422a..8867897 100644
Binary files a/build/test/out/c/test_timequiz.o and b/build/test/out/c/test_timequiz.o differ
diff --git a/build/test/out/c/test_timequiz_runner.o b/build/test/out/c/test_timequiz_runner.o
index 4ce060a..ad0ae8b 100644
Binary files a/build/test/out/c/test_timequiz_runner.o and b/build/test/out/c/test_timequiz_runner.o differ
diff --git a/build/test/out/c/test_wwm.o b/build/test/out/c/test_wwm.o
index c1fb4e9..ac97891 100644
Binary files a/build/test/out/c/test_wwm.o and b/build/test/out/c/test_wwm.o differ
diff --git a/build/test/out/c/test_wwm_runner.o b/build/test/out/c/test_wwm_runner.o
index 8cbff0e..6500951 100644
Binary files a/build/test/out/c/test_wwm_runner.o and b/build/test/out/c/test_wwm_runner.o differ
diff --git a/build/test/out/c/unity.o b/build/test/out/c/unity.o
index 7978819..b300e29 100644
Binary files a/build/test/out/c/unity.o and b/build/test/out/c/unity.o differ
diff --git a/build/test/out/test_casualQuiz.out b/build/test/out/test_casualQuiz.out
index 5e23927..aaa1069 100755
Binary files a/build/test/out/test_casualQuiz.out and b/build/test/out/test_casualQuiz.out differ
diff --git a/build/test/out/test_quizduell.out b/build/test/out/test_quizduell.out
index 1d12660..801da28 100755
Binary files a/build/test/out/test_quizduell.out and b/build/test/out/test_quizduell.out differ
diff --git a/build/test/out/test_timequiz.out b/build/test/out/test_timequiz.out
index b11a47c..a50bbee 100755
Binary files a/build/test/out/test_timequiz.out and b/build/test/out/test_timequiz.out differ
diff --git a/build/test/out/test_wwm.out b/build/test/out/test_wwm.out
index 621f189..21dc94f 100755
Binary files a/build/test/out/test_wwm.out and b/build/test/out/test_wwm.out differ
diff --git a/build/test/results/test_casualQuiz.pass b/build/test/results/test_casualQuiz.pass
index f499a71..2b7d717 100644
--- a/build/test/results/test_casualQuiz.pass
+++ b/build/test/results/test_casualQuiz.pass
@@ -11,4 +11,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.004336156009230763
+:time: 0.04532009999996944
diff --git a/build/test/results/test_quizduell.pass b/build/test/results/test_quizduell.pass
index c39a5bb..7860d99 100644
--- a/build/test/results/test_quizduell.pass
+++ b/build/test/results/test_quizduell.pass
@@ -11,4 +11,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.004334530996857211
+:time: 0.032967900000016925
diff --git a/build/test/results/test_timequiz.pass b/build/test/results/test_timequiz.pass
index b96e36f..be4fc39 100644
--- a/build/test/results/test_timequiz.pass
+++ b/build/test/results/test_timequiz.pass
@@ -11,4 +11,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.0043847519846167415
+:time: 0.032357900000022255
diff --git a/build/test/results/test_wwm.pass b/build/test/results/test_wwm.pass
index 5af2254..f4e43ea 100644
--- a/build/test/results/test_wwm.pass
+++ b/build/test/results/test_wwm.pass
@@ -11,4 +11,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.004366140026831999
+:time: 0.0354631000000154
diff --git a/src/quizduell.h b/src/quizduell.h
index 631b6bd..96ec749 100644
--- a/src/quizduell.h
+++ b/src/quizduell.h
@@ -1,6 +1,31 @@
 #ifndef QUIZDUELL_H
 #define QUIZDUELL_H
 
+#define MAX_FRAGE_LENGTH 100
+#define MAX_ANTWORT_LENGTH 50
+#define MAX_CATEGORIES 3
+#define MAX_QUESTIONS_PER_CATEGORY 3
+
+typedef struct {
+    char frage[MAX_FRAGE_LENGTH];
+    char antwortA[MAX_ANTWORT_LENGTH];
+    char antwortB[MAX_ANTWORT_LENGTH];
+    char antwortC[MAX_ANTWORT_LENGTH];
+    char antwortD[MAX_ANTWORT_LENGTH];
+    char korrekteAntwort;
+} QuizFrage;
+
+typedef struct {
+    QuizFrage* fragen;
+    int anzahlFragen;
+    int joker;
+} Kategorie;
+
+int pruefeAntwort(QuizFrage frage, char antwort);
+QuizFrage erstelleFrage(const char* frage, const char* antwortA, const char* antwortB, const char* antwortC, const char* antwortD, char korrekteAntwort);
+int spieleKategorie(Kategorie* kategorie);
+void zeigeVerfuegbareKategorien(Kategorie kategorien[]);
+void befreieKategorie(Kategorie* kategorie);
 void quizduell();
 
 #endif // ende QUIZDUELL_H