diff --git a/build/test/cache/test_Kritische_Menge.c b/build/test/cache/test_Kritische_Menge.c
new file mode 100644
index 0000000..820a272
--- /dev/null
+++ b/build/test/cache/test_Kritische_Menge.c
@@ -0,0 +1,45 @@
+#include "src/funktion.h"
+#include "C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+void setUp(void)
+
+{
+
+}
+
+
+
+void tearDown(void)
+
+{
+
+}
+
+
+
+void test_Kritische_Menge_NeedToImplement(void)
+
+{
+
+    double a =658423;
+
+    double b = 56432;
+
+    double c = 1999;
+
+    double result = Kritische_Menge(a,b,c);
+
+    double ergebnis = -12.096026;
+
+    printf("Testergebniss %f", ergebnis);
+
+    UnityAssertFloatsWithin((UNITY_FLOAT)((UNITY_FLOAT)((result)) * (UNITY_FLOAT)(0.00001f)), (UNITY_FLOAT)((UNITY_FLOAT)((result))), (UNITY_FLOAT)((UNITY_FLOAT)((ergebnis))), ((
+
+   ((void *)0)
+
+   )), (UNITY_UINT)((UNITY_UINT)(21)));
+
+}
diff --git a/build/test/dependencies/test_Kritische_Menge.d b/build/test/dependencies/test_Kritische_Menge.d
new file mode 100644
index 0000000..213c7b8
--- /dev/null
+++ b/build/test/dependencies/test_Kritische_Menge.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_Kritische_Menge.o: test/test_Kritische_Menge.c \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h \
+ src/funktion.h
diff --git a/build/test/dependencies/test_Kritische_Menge_runner.d b/build/test/dependencies/test_Kritische_Menge_runner.d
new file mode 100644
index 0000000..a455ed5
--- /dev/null
+++ b/build/test/dependencies/test_Kritische_Menge_runner.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_Kritische_Menge_runner.o: \
+ build/test/runners/test_Kritische_Menge_runner.c \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/out/c/funktion.o b/build/test/out/c/funktion.o
index 930765f..75d53e6 100644
Binary files a/build/test/out/c/funktion.o and b/build/test/out/c/funktion.o differ
diff --git a/build/test/out/c/test_Kritische_Menge.o b/build/test/out/c/test_Kritische_Menge.o
new file mode 100644
index 0000000..7e4bf9e
Binary files /dev/null and b/build/test/out/c/test_Kritische_Menge.o differ
diff --git a/build/test/out/c/test_Kritische_Menge_runner.o b/build/test/out/c/test_Kritische_Menge_runner.o
new file mode 100644
index 0000000..88f8e50
Binary files /dev/null and b/build/test/out/c/test_Kritische_Menge_runner.o differ
diff --git a/build/test/out/test_Anlagenabnutzungsgrad.out b/build/test/out/test_Anlagenabnutzungsgrad.out
index 538d229..4b544fb 100644
Binary files a/build/test/out/test_Anlagenabnutzungsgrad.out and b/build/test/out/test_Anlagenabnutzungsgrad.out differ
diff --git a/build/test/out/test_Anlagenintensitaet.out b/build/test/out/test_Anlagenintensitaet.out
index f1db905..5cfc9b2 100644
Binary files a/build/test/out/test_Anlagenintensitaet.out and b/build/test/out/test_Anlagenintensitaet.out differ
diff --git a/build/test/out/test_Anlagenproduktivitaet.out b/build/test/out/test_Anlagenproduktivitaet.out
index d278755..b99f998 100644
Binary files a/build/test/out/test_Anlagenproduktivitaet.out and b/build/test/out/test_Anlagenproduktivitaet.out differ
diff --git a/build/test/out/test_Arbeitsproduktivitaet.out b/build/test/out/test_Arbeitsproduktivitaet.out
index 2cb6c26..137baa4 100644
Binary files a/build/test/out/test_Arbeitsproduktivitaet.out and b/build/test/out/test_Arbeitsproduktivitaet.out differ
diff --git a/build/test/out/test_Kalkulatorische_Zinsen.out b/build/test/out/test_Kalkulatorische_Zinsen.out
index 21c5554..fbdf5c4 100644
Binary files a/build/test/out/test_Kalkulatorische_Zinsen.out and b/build/test/out/test_Kalkulatorische_Zinsen.out differ
diff --git a/build/test/out/test_Kritische_Menge.out b/build/test/out/test_Kritische_Menge.out
new file mode 100644
index 0000000..322781a
Binary files /dev/null and b/build/test/out/test_Kritische_Menge.out differ
diff --git a/build/test/out/test_angebotserfolg.out b/build/test/out/test_angebotserfolg.out
index e60efb8..7c281c0 100644
Binary files a/build/test/out/test_angebotserfolg.out and b/build/test/out/test_angebotserfolg.out differ
diff --git a/build/test/out/test_marktanteil.out b/build/test/out/test_marktanteil.out
index 03856ca..486646c 100644
Binary files a/build/test/out/test_marktanteil.out and b/build/test/out/test_marktanteil.out differ
diff --git a/build/test/preprocess/files/test_Kritische_Menge.c b/build/test/preprocess/files/test_Kritische_Menge.c
new file mode 100644
index 0000000..820a272
--- /dev/null
+++ b/build/test/preprocess/files/test_Kritische_Menge.c
@@ -0,0 +1,45 @@
+#include "src/funktion.h"
+#include "C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+void setUp(void)
+
+{
+
+}
+
+
+
+void tearDown(void)
+
+{
+
+}
+
+
+
+void test_Kritische_Menge_NeedToImplement(void)
+
+{
+
+    double a =658423;
+
+    double b = 56432;
+
+    double c = 1999;
+
+    double result = Kritische_Menge(a,b,c);
+
+    double ergebnis = -12.096026;
+
+    printf("Testergebniss %f", ergebnis);
+
+    UnityAssertFloatsWithin((UNITY_FLOAT)((UNITY_FLOAT)((result)) * (UNITY_FLOAT)(0.00001f)), (UNITY_FLOAT)((UNITY_FLOAT)((result))), (UNITY_FLOAT)((UNITY_FLOAT)((ergebnis))), ((
+
+   ((void *)0)
+
+   )), (UNITY_UINT)((UNITY_UINT)(21)));
+
+}
diff --git a/build/test/preprocess/includes/test_Kritische_Menge.c b/build/test/preprocess/includes/test_Kritische_Menge.c
new file mode 100644
index 0000000..376e2c1
--- /dev/null
+++ b/build/test/preprocess/includes/test_Kritische_Menge.c
@@ -0,0 +1,3 @@
+---
+- C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h
+- src/funktion.h
diff --git a/build/test/results/test_Anlagenabnutzungsgrad.pass b/build/test/results/test_Anlagenabnutzungsgrad.pass
index ad528a8..294c639 100644
--- a/build/test/results/test_Anlagenabnutzungsgrad.pass
+++ b/build/test/results/test_Anlagenabnutzungsgrad.pass
@@ -15,6 +15,5 @@
   :failed: 0
   :ignored: 0
 :stdout:
-- Der Anlagenabnutzungsgrad betraegt 60.00%
 - Testergebniss 60.000000
-:time: 0.3835256999882404
+:time: 0.4376596999936737
diff --git a/build/test/results/test_Anlagenintensitaet.pass b/build/test/results/test_Anlagenintensitaet.pass
index 97a818b..33f9000 100644
--- a/build/test/results/test_Anlagenintensitaet.pass
+++ b/build/test/results/test_Anlagenintensitaet.pass
@@ -16,4 +16,4 @@
   :ignored: 0
 :stdout:
 - Testergebniss 4878.048780
-:time: 0.38365560001693666
+:time: 0.3743458999961149
diff --git a/build/test/results/test_Anlagenproduktivitaet.pass b/build/test/results/test_Anlagenproduktivitaet.pass
index d7f23f9..f29c7ee 100644
--- a/build/test/results/test_Anlagenproduktivitaet.pass
+++ b/build/test/results/test_Anlagenproduktivitaet.pass
@@ -16,4 +16,4 @@
   :ignored: 0
 :stdout:
 - Testergebniss 18.203304
-:time: 0.47731210000347346
+:time: 0.3313736999989487
diff --git a/build/test/results/test_Arbeitsproduktivitaet.pass b/build/test/results/test_Arbeitsproduktivitaet.pass
index 9d3c6af..f2c5539 100644
--- a/build/test/results/test_Arbeitsproduktivitaet.pass
+++ b/build/test/results/test_Arbeitsproduktivitaet.pass
@@ -16,4 +16,4 @@
   :ignored: 0
 :stdout:
 - Testergebniss 60.000000
-:time: 0.4808218999824021
+:time: 0.3860949000227265
diff --git a/build/test/results/test_Kalkulatorische_Zinsen.pass b/build/test/results/test_Kalkulatorische_Zinsen.pass
index 7e9823f..b6c6b9b 100644
--- a/build/test/results/test_Kalkulatorische_Zinsen.pass
+++ b/build/test/results/test_Kalkulatorische_Zinsen.pass
@@ -16,4 +16,4 @@
   :ignored: 0
 :stdout:
 - Testergebniss 1.440000
-:time: 0.4978156000142917
+:time: 0.39521369998692535
diff --git a/build/test/results/test_Kritische_Menge.pass b/build/test/results/test_Kritische_Menge.pass
new file mode 100644
index 0000000..55324e9
--- /dev/null
+++ b/build/test/results/test_Kritische_Menge.pass
@@ -0,0 +1,19 @@
+---
+:source:
+  :path: test
+  :file: test_Kritische_Menge.c
+:successes:
+- :test: test_Kritische_Menge_NeedToImplement
+  :line: 13
+  :message: ''
+  :unity_test_time: 0
+:failures: []
+:ignores: []
+:counts:
+  :total: 1
+  :passed: 1
+  :failed: 0
+  :ignored: 0
+:stdout:
+- Testergebniss -12.096026
+:time: 0.4311571999860462
diff --git a/build/test/results/test_angebotserfolg.pass b/build/test/results/test_angebotserfolg.pass
index 19f87db..4346e53 100644
--- a/build/test/results/test_angebotserfolg.pass
+++ b/build/test/results/test_angebotserfolg.pass
@@ -16,4 +16,4 @@
   :ignored: 0
 :stdout:
 - Testergebniss 225.000000
-:time: 0.3750838999985717
+:time: 0.3919333999801893
diff --git a/build/test/results/test_marktanteil.pass b/build/test/results/test_marktanteil.pass
index b70caf2..496a4f7 100644
--- a/build/test/results/test_marktanteil.pass
+++ b/build/test/results/test_marktanteil.pass
@@ -15,6 +15,5 @@
   :failed: 0
   :ignored: 0
 :stdout:
-- 'Der Marktanteil beträgt: 21.739130'
 - Testergebniss 21.739130
-:time: 0.26141169999027625
+:time: 0.3646467000071425
diff --git a/build/test/runners/test_Kritische_Menge_runner.c b/build/test/runners/test_Kritische_Menge_runner.c
new file mode 100644
index 0000000..0cd0445
--- /dev/null
+++ b/build/test/runners/test_Kritische_Menge_runner.c
@@ -0,0 +1,81 @@
+/* AUTOGENERATED FILE. DO NOT EDIT. */
+
+/*=======Automagically Detected Files To Include=====*/
+#include "unity.h"
+
+int GlobalExpectCount;
+int GlobalVerifyOrder;
+char* GlobalOrderError;
+
+/*=======External Functions This Runner Calls=====*/
+extern void setUp(void);
+extern void tearDown(void);
+extern void test_Kritische_Menge_NeedToImplement(void);
+
+
+/*=======Mock Management=====*/
+static void CMock_Init(void)
+{
+  GlobalExpectCount = 0;
+  GlobalVerifyOrder = 0;
+  GlobalOrderError = NULL;
+}
+static void CMock_Verify(void)
+{
+}
+static void CMock_Destroy(void)
+{
+}
+
+/*=======Test Reset Options=====*/
+void resetTest(void);
+void resetTest(void)
+{
+  tearDown();
+  CMock_Verify();
+  CMock_Destroy();
+  CMock_Init();
+  setUp();
+}
+void verifyTest(void);
+void verifyTest(void)
+{
+  CMock_Verify();
+}
+
+/*=======Test Runner Used To Run Each Test=====*/
+static void run_test(UnityTestFunction func, const char* name, UNITY_LINE_TYPE line_num)
+{
+    Unity.CurrentTestName = name;
+    Unity.CurrentTestLineNumber = line_num;
+#ifdef UNITY_USE_COMMAND_LINE_ARGS
+    if (!UnityTestMatches())
+        return;
+#endif
+    Unity.NumberOfTests++;
+    UNITY_CLR_DETAILS();
+    UNITY_EXEC_TIME_START();
+    CMock_Init();
+    if (TEST_PROTECT())
+    {
+        setUp();
+        func();
+    }
+    if (TEST_PROTECT())
+    {
+        tearDown();
+        CMock_Verify();
+    }
+    CMock_Destroy();
+    UNITY_EXEC_TIME_STOP();
+    UnityConcludeTest();
+}
+
+/*=======MAIN=====*/
+int main(void)
+{
+  UnityBegin("test_Kritische_Menge.c");
+  run_test(test_Kritische_Menge_NeedToImplement, "test_Kritische_Menge_NeedToImplement", 13);
+
+  return UnityEnd();
+}
diff --git a/main.exe b/main.exe
new file mode 100644
index 0000000..bacb4a6
Binary files /dev/null and b/main.exe differ
diff --git a/test/test_Kritische_Menge.c b/test/test_Kritische_Menge.c
new file mode 100644
index 0000000..6e33127
--- /dev/null
+++ b/test/test_Kritische_Menge.c
@@ -0,0 +1,22 @@
+#include "unity.h"
+#include "funktion.h"
+
+
+void setUp(void)
+{
+}
+
+void tearDown(void)
+{
+}
+
+void test_Kritische_Menge_NeedToImplement(void)
+{
+    double a =658423;
+    double b = 56432;
+    double c = 1999;
+    double result = Kritische_Menge(a,b,c);
+    double ergebnis =  -12.096026;
+    printf("Testergebniss %f", ergebnis);
+    TEST_ASSERT_EQUAL_FLOAT(result, ergebnis);
+}