diff --git a/src/calculatorGetUserInputFactorial.c b/src/calculatorGetUserInputFactorial.c
index 661e1ec..0f556e8 100644
--- a/src/calculatorGetUserInputFactorial.c
+++ b/src/calculatorGetUserInputFactorial.c
@@ -1,16 +1,20 @@
 #include "calculatorGetUserInputFactorial.h"
-int allowWhen()
+// 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 */
+
+int allowWhen()// int allowWhen() is helpful for indirectly unittesting void calculatorGetUserInputFactorial()
 {
-    if(q == 1)
+    if(utc == 1)
     return 1;
 }
 
-void calculatorGetUserInputFactorial(int *z)
+void calculatorGetUserInputFactorial(int *num)
 {
-    if(allowWhen() == 1)
+    if(allowWhen() == 1)//Only when int allowWhen() returns 1, void calculatorGetUserInputFactorial() will display desired Output
     {
         printf("num: ");
-        scanf("%d", z);
+        scanf("%d", num);
     }
 }
 
diff --git a/src/calculatorGetUserInputFactorial.h b/src/calculatorGetUserInputFactorial.h
index 272bb52..d8da77c 100644
--- a/src/calculatorGetUserInputFactorial.h
+++ b/src/calculatorGetUserInputFactorial.h
@@ -3,8 +3,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 int allowWhen();
-const int q = 1;
-void calculatorGetUserInputFactorial(int *z);
+const int utc = 1;   //ufc is unitTestConstant, which has a role in unittesting void calculatorGetUserInputFactorial()
+void calculatorGetUserInputFactorial(int *num);
 
 
 #endif // CALCULATORGETUSERINPUTFACTORIAL_H