Merge pull request #1 from EntireTwix/User

added User class

.gitignore

@@ -0,0 +1 @@
+.vscode

include/user.hpp

@@ -0,0 +1,51 @@
+#pragma once
+#include <string>
+#include <mutex>
+
+class User
+{
+private:
+    uint_fast64_t balance;
+    std::string password;
+
+    std::mutex bal_lock;
+    std::mutex pass_lock;
+
+public:
+    User(uint_fast64_t init_bal, std::string &&init_pass) : balance(init_bal), password(init_pass) {}
+
+    bool ChangePassword(const std::string &attempt, std::string &&new_pass)
+    {
+        std::lock_guard<std::mutex> lock{pass_lock};
+        const bool state = (password == attempt);
+        if (state)
+        {
+            password == new_pass;
+        }
+        return state;
+    }
+
+    friend bool SendFunds(User &a, User &b, uint_fast64_t amount, const std::string &attempt)
+    {
+        std::scoped_lock<std::mutex, std::mutex> lock{a.bal_lock, a.pass_lock};
+        const bool state = (a.password == attempt) && (a.balance >= amount);
+        if (state)
+        {
+            a.balance -= amount;
+            b.balance += amount;
+        }
+        return state;
+    }
+
+    bool GetBal()
+    {
+        std::lock_guard<std::mutex> lock{bal_lock};
+        return balance;
+    }
+
+    bool VerifyPassword(const std::string &attempt) //for connected services
+    {
+        std::lock_guard<std::mutex> lock{pass_lock};
+        return (password == attempt);
+    }
+};

main.cpp

@@ -1,7 +1,10 @@
 #include <iostream>
- 
+#include "user.hpp"
+
 int main()
 {
+    User x(1000, "pass123");
+    std::cout << x.ChangePassword("pass123", "newpass123");
 
     return 0;
 }