diff --git a/build-script.sh b/build-script.sh
new file mode 100755
index 0000000..0f1eb09
--- /dev/null
+++ b/build-script.sh
@@ -0,0 +1,6 @@
+clear
+cd src/
+gcc stringManipulation.c createCustomer.c mainMenu.c program.c -o program.out
+./program.out
+rm program.out
+cd ..
diff --git a/src/CustomerData.txt b/src/CustomerData.txt
deleted file mode 100644
index 3ac070f..0000000
--- a/src/CustomerData.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-1234=example
-ID=1234
-forename=Max
-Surname=Mustermann
-password=example
-balance=0
diff --git a/src/createCustomer.c b/src/createCustomer.c
index dbc78d6..58ee01d 100644
--- a/src/createCustomer.c
+++ b/src/createCustomer.c
@@ -21,6 +21,7 @@ void collectCustomerProperties()
 	bool inputTooLong = false;
 	printf("To create a new user, enter the information required below.\n");
 	printf("Enter forename (max. 15 letters):\n");
+	userInput = getchar();
 	while(letterCounter<letterMaximum && (userInput=getchar())!='\n'){
 		*(instance.forename+letterCounter) = userInput;
 		++letterCounter;
@@ -79,12 +80,9 @@ void writeCustomerPropertiesToFile(customer_t *referenceToCustomerInstance)
 {
 	FILE *customerData = fopen("CustomerData.txt","a");
 	if(customerData!=NULL){
-		/*calling generateCheckString() at this place in future*/
-		fprintf(customerData,"ID=%d\nForename=%s\nSurname=%s\nPassword=%s\nBalance=%.4f€\n\n",
-				referenceToCustomerInstance->ID,referenceToCustomerInstance->forename,
-				referenceToCustomerInstance->surname,referenceToCustomerInstance->password,
-				referenceToCustomerInstance->balance);
-		fclose(customerData);
+fprintf(customerData,"%s\nID=%d\nForename=%s\nSurname=%s\nPassword=%s\nBalance=%.4f€\n\n",
+generateCheckString(referenceToCustomerInstance->ID, referenceToCustomerInstance->password),referenceToCustomerInstance->ID,referenceToCustomerInstance->forename,referenceToCustomerInstance->surname,referenceToCustomerInstance->password, referenceToCustomerInstance->balance);
+	fclose(customerData);
 	}
 	else{
 		printf("Error when accessing the file.\n");
diff --git a/src/createCustomer.h b/src/createCustomer.h
index bd58756..82eeee8 100644
--- a/src/createCustomer.h
+++ b/src/createCustomer.h
@@ -3,6 +3,7 @@
 #include <stdbool.h>
 #include <time.h>
 #include "customerProperties.h"
+#include "stringManipulation.h"
 int generateID();
 void collectCustomerProperties();
 void writeCustomerPropertiesToFile(customer_t *);
diff --git a/src/mainMenu.c b/src/mainMenu.c
index 78611ea..0bed352 100644
--- a/src/mainMenu.c
+++ b/src/mainMenu.c
@@ -55,7 +55,7 @@ void ageInput()
              
             menuInput();
 
-            menuInput();
+            //menuInput();
 
 	    break;
 
@@ -90,7 +90,7 @@ void menuInput()
     
     scanf("%s", choiceInput);
     selection = strtol(choiceInput, &choiceInputPointer, 10);
-    
+	    
     while (!checkIfInteger(choiceInput) || !chooseOption(selection)) 
     {
         printf("Input invalid! try again!\n");
@@ -99,15 +99,14 @@ void menuInput()
 
         selection = strtol(choiceInput, &choiceInputPointer, 10);
     }
-    
     switch(selection) 
     {
         case 1 : printf("\nLoginAsCostumer() function will be implemented here soon\n\n");
                  break;
 
-        case 2 : printf("\ncreateCostumerAccount() function will be implemented here soon\n\n"); 
-                 break;
-
+        case 2 :
+                 collectCustomerProperties();
+		 break;
         case 3 : printf("\nLoginAsEmployee() function will be implemented here soon\n\n"); 
                  break;
 
diff --git a/src/mainMenu.h b/src/mainMenu.h
index 4907629..0891487 100644
--- a/src/mainMenu.h
+++ b/src/mainMenu.h
@@ -6,6 +6,8 @@
 #include<stdbool.h>
 #include<string.h>
 
+#include "createCustomer.h"
+
 bool agePermission(int age);
 bool checkIfInteger(char* userInput);
 bool chooseOption(int choiceInput);
diff --git a/src/program.c b/src/program.c
new file mode 100644
index 0000000..3aa7390
--- /dev/null
+++ b/src/program.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "mainMenu.h"
+
+void runBankManagementSystem()
+{
+	ageInput();
+}
+
+int main()
+{
+	runBankManagementSystem();
+}
diff --git a/src/StringManipulation.c b/src/stringManipulation.c
similarity index 97%
rename from src/StringManipulation.c
rename to src/stringManipulation.c
index 7ac306e..8ac683a 100644
--- a/src/StringManipulation.c
+++ b/src/stringManipulation.c
@@ -1,4 +1,4 @@
-#include "StringManipulation.h"
+#include "stringManipulation.h"
 /*Code written by Julius Philipp Engel, fdai7057*/
 
 char *stringConcatenation(char *string_1, char *string_2)
diff --git a/src/StringManipulation.h b/src/stringManipulation.h
similarity index 100%
rename from src/StringManipulation.h
rename to src/stringManipulation.h