diff --git a/tests/test_calculatorSubtract.c b/tests/test_calculatorSubtract.c
index abf9859..e898b7b 100644
--- a/tests/test_calculatorSubtract.c
+++ b/tests/test_calculatorSubtract.c
@@ -4,6 +4,11 @@
 
 #include "calculatorSubtract.h"
 
+// Note:
+/* This Function may or may not be implemented in actual program, even if it is merged to the main branch.
+   If it is temporarily not included in the main Program, then this has a role in future Development of the Project */
+
+
 void setUp(void)
 {
 }
@@ -15,102 +20,102 @@ void tearDown(void)
 
 void test1_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 123.211;
-    q = 112.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 123.211;
+    num2 = 112.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test2_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 13.21;
-    q = 112.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 13.21;
+    num2 = 112.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test3_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 12231.211;
-    q = 1122.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 12231.211;
+    num2 = 1122.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test4_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 113453.211;
-    q = 11254.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 113453.211;
+    num2 = 11254.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test5_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 12133.211;
-    q = 112.231;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 12133.211;
+    num2 = 112.231;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test6_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 1133.201;
-    q = 11221.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 1133.201;
+    num2 = 11221.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test7_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 12213.2211;
-    q = 111.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 12213.2211;
+    num2 = 111.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test8_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 16213.711;
-    q = 1214.2251;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 16213.711;
+    num2 = 1214.2251;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test9_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 1933.611;
-    q = 1432.21;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 1933.611;
+    num2 = 1432.21;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 void test10_calculatorSubtract(void)
 {
-    float p, q, a, e;
-    p = 1233.811;
-    q = 1121.131;
-    e = p - q;
-    a = calculatorSubtract(p, q);
-    TEST_ASSERT_EQUAL_FLOAT(e, a);
+    float num1, num2, actual, expected;             //Arrange
+    num1 = 1233.811;
+    num2 = 1121.131;
+    expected = num1 - num2;
+    actual = calculatorSubtract(num1, num2);        //Act
+    TEST_ASSERT_EQUAL_FLOAT(expected, actual);      //Assert
 }
 
 #endif // TEST