feat: Implemented Bank Management System with core banking operations

.vscode/c_cpp_properties.json

@@ -0,0 +1,20 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ],
+            "compilerPath": "C:\\MinGW\\bin\\gcc.exe",
+            "cStandard": "c11",
+            "cppStandard": "gnu++14",
+            "intelliSenseMode": "windows-gcc-x86"
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "C_Cpp.errorSquiggles": "disabled"
+}

Src/Bank_Managment_System/bankdata.txt

@@ -0,0 +1,2 @@
+460175970	Ram	Dashrath	223223001111	9812345670	ram@gmail.com	5000
+588668694	Shyam	Mohan	223223002222	9823456789	shyam@gmail.com	3400

Src/Bank_Managment_System/banksystem.cpp

@@ -0,0 +1,236 @@
+#include<bits/stdc++.h>
+using namespace std;
+//Bank class
+class Bank{
+    int accNo;
+    char name[25];
+    char father[25];
+    char Aadhar[25];
+    char mobile[25];
+    char email[25];
+    float amount;
+    int newAmount;
+    fstream file, file1;
+
+public:
+    int search;
+
+    void createAccount(void);
+    void depositAmount(void);
+    void withdrawAmount(void);
+    void checkInfo(void);
+    bool isValidEmail(const string &email);
+    bool isDuplicate(const string &Aadhar, const string &email, const string &phone);
+};
+//check email valid ya invalid
+bool Bank::isValidEmail(const string &email) {
+    return (email.find('@') != string::npos && email.find('.') != string::npos && email.find(' ') == string::npos);
+}
+//check duplicate user
+bool Bank::isDuplicate(const string &cnicVal, const string &emailVal, const string &phoneVal) {
+    fstream f;
+    f.open("bankdata.txt", ios::in);
+    if (!f)
+        return false;
+
+    int acc;
+    char n[25], fn[25], c[25], p[25], e[25];
+    float amt;
+    while(f>>acc>>n>>fn>>c>>p>>e>>amt){
+        if(strcmp(c, cnicVal.c_str()) == 0 || strcmp(e, emailVal.c_str()) == 0 || strcmp(p, phoneVal.c_str()) == 0) {
+            f.close();
+            return true;
+        }
+    }
+    f.close();
+    return false;
+}
+//create Account
+void Bank::createAccount(){
+    srand(time(0));
+    accNo = rand()*rand() + rand()*rand();
+
+    cout << "Enter Your name -: ";
+    cin >> name;
+    cout << "Enter Your Father name -: ";
+    cin >> father;
+    cout << "Enter Your Aadhar no. -: ";
+    cin >> Aadhar;
+    cout << "Enter Your phone no. -: ";
+    cin >> mobile;
+    cout << "Enter Your email -: ";
+    cin >> email;
+
+    // Email Validation
+    if(!isValidEmail(email)){
+        cout << "\n Invalid email format! Use a valid email (e.g., abc@gmail.com)\n";
+        return;
+    }
+
+    // Duplicate Check
+    if(isDuplicate(Aadhar, email, mobile)){
+        cout << "\n Account with same Aadhar, Email or Phone already exists!\n";
+        return;
+    }
+    cout << "Enter Your amount to deposit -: ";
+    cin>>amount;
+    cout << endl
+         << accNo << " This is your account number...\n";
+    cout << "Please save it.\n\n";
+
+    file.open("bankdata.txt", ios::out | ios::app);
+    file << accNo << "\t" << name << "\t" << father << "\t" << Aadhar << "\t" << mobile << "\t" << email << "\t" << amount << endl;
+    file.close();
+
+    cout << "✅ Account created successfully!\n";
+}
+//deposit
+void Bank::depositAmount() {
+    cout << "Enter amount to deposit -: ";
+    cin >> newAmount;
+
+    file.open("bankdata.txt", ios::in);
+    file1.open("bankdata1.txt", ios::out | ios::app);
+    file >> accNo >> name >> father >> Aadhar >> mobile >> email >> amount;
+
+    bool found = false;
+    while(!file.eof()){
+        if(accNo == search){
+            found = true;
+            cout << "\nCurrent amount -: " << amount;
+            amount = amount + newAmount;
+            cout << "\nUpdated amount -: " << amount << endl;
+        }
+        file1 << accNo << "\t" << name << "\t" << father << "\t" << Aadhar << "\t" << mobile << "\t" << email << "\t" << amount << endl;
+        file >> accNo >> name >> father >> Aadhar >> mobile >> email >> amount;
+    }
+
+    if (!found)
+        cout << "\n Account not found!\n";
+
+    file.close();
+    file1.close();
+    remove("bankdata.txt");
+    rename("bankdata1.txt", "bankdata.txt");
+}
+//withdraw
+void Bank::withdrawAmount() {
+    cout << "Enter amount to withdraw -: ";
+    cin >> newAmount;
+
+    file.open("bankdata.txt", ios::in);
+    file1.open("bankdata1.txt", ios::out | ios::app);
+    file >> accNo >> name >> father >> Aadhar >> mobile >> email >> amount;
+
+    bool found = false;
+    while(!file.eof()){
+        if(accNo == search){
+            found = true;
+            cout << "\nCurrent amount -: " << amount;
+            if(newAmount > amount) {
+                cout << "\n Insufficient balance!\n";
+            }else {
+                amount = amount - newAmount;
+                cout << "\nUpdated amount -: " << amount << endl;
+            }
+        }
+        file1 << accNo << "\t" << name << "\t" << father << "\t" << Aadhar << "\t" << mobile << "\t" << email << "\t" << amount << endl;
+        file >> accNo >> name >> father >> Aadhar >> mobile >> email >> amount;
+    }
+
+    if (!found)
+        cout << "\n Account not found!\n";
+
+    file.close();
+    file1.close();
+    remove("bankdata.txt");
+    rename("bankdata1.txt", "bankdata.txt");
+}
+//check info    
+void Bank::checkInfo() {
+    fstream file;
+    file.open("bankdata.txt", ios::in);
+    if (!file) {
+        cout << " File opening error!";
+        return;
+    }
+    file >> accNo >> name >> father >> Aadhar >> mobile >> email >> amount;
+    bool found = false;
+    while (!file.eof()) {
+        if (accNo == search) {
+            found = true;
+            cout << "\n_________________________________________\n";
+            cout << "\t# Account Number - " << accNo << endl;
+            cout << "\t# User Name      - " << name << endl;
+            cout << "\t# Father Name    - " << father << endl;
+            cout << "\t# Aadhar number  - " << Aadhar << endl;
+            cout << "\t# Phone Number   - " << mobile << endl;
+            cout << "\t# Email          - " << email << endl;
+            cout << "\t# Current amount - " << amount << endl;
+            cout << "___________________________________________\n\n";
+        }
+        file >> accNo >> name >> father >> Aadhar >> mobile >> email >> amount;
+    }
+
+    if (!found)
+        cout << "\n Account not found!\n";
+
+    file.close();
+}
+//main function
+int main() {
+    Bank obj;
+    char choice;
+
+    cout << "\n\n\n\t\tWelcome! choose your Option :";
+    cout << "\n\t\t1. press 1 to Login  Account ";
+    cout << "\n\t\t2. press 2 to Create Account";
+    cout << "\n\t\t3. press 0 to Exit           ";
+    cout << "\n\t\t >Enter choice... :\t";
+    cin >> choice;
+//choice
+    switch (choice) {
+    case '1':
+        cout << "Enter your account no -: ";
+        cin >> obj.search;
+        while (1) {
+            cout << "\n\n\n\t\tWelcome! choose your Option :";
+            cout << "\n\t\t1. press 1 to Deposit  Amount ";
+            cout << "\n\t\t2. press 2 to Withdraw Amount";
+            cout << "\n\t\t3. press 3 to Check    Info";
+            cout << "\n\t\t4. press 0 to Exit     Menu";
+            cout << "\n\t\t>Enter Choice... :\t";
+            cin >> choice;
+
+            switch (choice) {
+            case '1':
+                obj.depositAmount();
+                break;
+            case '2':
+                obj.withdrawAmount();
+                break;
+            case '3':
+                obj.checkInfo();
+                break;
+            case '0':
+                return 0;
+            default:
+                cout << "Invalid Choice...!";
+                break;
+            }
+            system("pause");
+            system("cls");
+        }
+        break;
+    case '2':
+        obj.createAccount();
+        break;
+    case '0':
+        cout << "Exiting... Thank you!\n";
+        break;
+    default:
+        cout << "\n Invalid choice...! ";
+        break;
+    }
+    return 0;
+}