Create function withdrawSpecificAmount

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 .vscode
+src/a.out

src/currencyExchange.h

@@ -1,3 +1,6 @@
+#ifndef CURRENCYEXCHANGE_H_
+#define CURRENCYEXCHANGE_H_
+
 #include <stdio.h>
 
 #define USD_RATE_OF_ONE_EURO 1.07
@@ -7,3 +10,5 @@
 #define CURRENCY_CODE_GBP 2
 
 float convert(float euro, int newCurrencyCode);
+
+#endif

src/currentCustomerAccountBalance.c

@@ -1,5 +1,6 @@
 #include "currentCustomerAccountBalance.h"
-#include "_file_information.h"
+//#include "_file_information.h"
+
 
 float fetchBalanceFromBalanceString(char balance_String[MAX_LENGTH]) {
     float balance = 0;

src/depositMoney.h

@@ -1,4 +1,5 @@
-
+#ifndef DEPOSITMONEY_H_
+#define DEPOSITMONEY_H_
 
 #include <stdio.h>
 #include "CustomerProperties.h"
@@ -9,3 +10,5 @@
 bool depositMoney(int customerID);
 void askToTryAgain(bool afterError, int customerID);
 bool depositSpecificAmount(int customerID, float amount);
+
+#endif

src/lineReplacer.h

@@ -1,6 +1,11 @@
+#ifndef LINEREPLACER_H_
+#define LINEREPLACER_H_
+
 #include <stdio.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 
 void replaceLineInFile(const char* file_name, int line, const char* new_line); //replaces the line at "line" on the file "file_name", with the new line "new_line".
+
+#endif

src/updateCustomerAccountBalance.c

@@ -7,7 +7,7 @@ void troubleShoot(int errorCode){
 
     switch(errorCode){
         case 0:
-            printf("Requested file could not be opened. Are you sure it exists?");
+            printf("Requested file could not be opened. Are you sure it exists or that the program has the required permissions?");
             break;
         case 1:
             printf("A temporary file could not be generated. Are you sure the bank management system has the required authorization to create new files?");
@@ -27,7 +27,7 @@ void troubleShoot(int errorCode){
 void replaceLineInFile(const char* file_name, int line, const char* new_line){
     FILE* file = fopen(file_name, "r");
     if (file == NULL) {
-        printf("Error opening file!\n");
+        troubleShoot(0);
         return;
     }
     char current_string[1024];
@@ -35,7 +35,7 @@ void replaceLineInFile(const char* file_name, int line, const char* new_line){
     char *temp_file_name = "temp.txt";
     FILE* temp_file = fopen(temp_file_name, "w");
     if (temp_file == NULL) {
-        printf("Error creating temp file!\n");
+        troubleShoot(1);
         fclose(file);
         return;
     }
@@ -51,10 +51,10 @@ void replaceLineInFile(const char* file_name, int line, const char* new_line){
     fclose(file);
     fclose(temp_file);
     if(remove(file_name)!=0){
-        printf("could not remove the original file!");
+        troubleShoot(2);
     } // Remove the original file
     if(rename(temp_file_name, file_name)!=0){
-        printf("could not rename!");
+        troubleShoot(3);
     } // Rename the temp file to the original file
 }
 
@@ -80,7 +80,7 @@ bool updateAvailableAccountBalance(int user_id, float newBalance){
 
     FILE *file = fopen(CUSTOMER_DATA_FILE, "r+"); 
     if (file == NULL) {
-        printf("Error: Could not open file CustomerData.txt\n");
+        troubleShoot(0);
         return false;
     }
     while(keep_reading) {
@@ -107,6 +107,8 @@ bool updateAvailableAccountBalance(int user_id, float newBalance){
     if(customer_found){
         replaceBalanceInString(newBalance,currentLine);
         return true;
+    }else{
+        troubleShoot(4);
     }
     return false;
     

src/withdrawMoney.c

@@ -1,6 +1,6 @@
 #include "withdrawMoney.h"
-#include "currentCustomerAccountBalance.c"
 #include "updateCustomerAccountBalance.c"
+#include "currentCustomerAccountBalance.c"
 
 void notifyCustomer(float amountToWithdraw, float remainingAccountBalance) {
     char returnToHomeInput;
@@ -21,7 +21,7 @@ float initiateWithdraw(float amountToWithdraw, float availableAccountBalance) {
     return remainingAccountBalance;
 }
 
-void withdraw(int user_id) {
+bool withdraw(int user_id) {
     float amountToWithdraw;
     char tryDifferentAmount;
     float remainingAccountBalance;
@@ -37,9 +37,11 @@ void withdraw(int user_id) {
             updateSuccess = updateAvailableAccountBalance(user_id, remainingAccountBalance);
             if( updateSuccess ) {
                 notifyCustomer(amountToWithdraw, remainingAccountBalance);
+                return true;
             }
             else {
                 printf("Some error occured! Sorry for the inconvenience caused.\n");
+                return false;
             }
             
         }
@@ -51,6 +53,7 @@ void withdraw(int user_id) {
             }
             else {
                 //showAllMenuEntries();
+                return false;
             }
         }
     }
@@ -58,4 +61,25 @@ void withdraw(int user_id) {
         printf("Invalid Input! Please try again.\n");
         withdraw(user_id);
     }
+    return false;
+}
+
+bool withdrawSpecificAmount(int user_id, float amountToWithdraw) {
+    float remainingAccountBalance;
+
+
+    float availableAccountBalance = getAvailableAccountBalance(user_id);
+    if (amountToWithdraw > 0) {
+
+        if (amountToWithdraw <= availableAccountBalance) {
+
+            remainingAccountBalance = initiateWithdraw(amountToWithdraw, availableAccountBalance);
+            if(updateAvailableAccountBalance(user_id, remainingAccountBalance)){
+                return true;
+            }
+            
+        }
         }
+    return false;
+}
+

src/withdrawMoney.h

@@ -1,6 +1,12 @@
+#ifndef WITHDRAWMONEY_H_
+#define WITHDRAWMONEY_H_
+
 #include <stdio.h>
 #include <stdbool.h>
 
-void withdraw(int user_id);
+bool withdraw(int user_id);
 float initiateWithdraw(float amountToWithdraw, float availableAccountBalance);
 void notifyCustomer(float amountToWithdraw, float remainingAccountBalance);
+bool withdrawSpecificAmount(int user_id, float amountToWithdraw);
+
+#endif