BankManagementSystem.c

[VatsalPandya47]

BankManagementSystem.c

BankManagementSystem.c is the main source code file for a simple yet effective Bank Management System implemented in the C programming language. This program serves as a foundational tool for managing basic banking operations and provides a command-line interface for users to interact with.

Features

• Account Creation: The program allows users to create new bank accounts with unique account numbers, which form the basis for all subsequent transactions.

• Deposit and Withdrawal: Users can deposit funds into their accounts as well as withdraw money when needed, ensuring the flexibility to manage their finances.

• Funds Transfer: The system enables seamless transfer of funds between different bank accounts, making it convenient for users to send money to others or manage their own accounts.

• Account Details: Users can access comprehensive account details, including the account holder's name, account number, and current balance.

• Transaction History: The program maintains a transaction history for each account, giving users the ability to review past financial activities.

Usage

1. Clone the repository to your local machine.
2. Navigate to the project directory.
3. Compile the program using a C compiler (e.g., GCC):

   
   gcc BankManagementSystem.c -o BankManagementSystem

[VatsalPandya47]

include

include

include

include

define MAX_ACCOUNTS 100

define PASSWORD_LENGTH 20

typedef struct { int account_number; char account_holder[50]; char password[PASSWORD_LENGTH]; float balance; } Account;

Account accounts[MAX_ACCOUNTS]; int num_accounts = 0;

// Function prototypes void createAccount(); void deposit(); void withdraw(); void viewBalance(); void printAllAccounts(); void changePassword(); bool isAccountExist(int account_number); bool authenticateAccount(int account_number, char* password);

int main() { int choice;

do {
    printf("\nBanking System Menu\n");
    printf("1. Create Account\n");
    printf("2. Deposit Money\n");
    printf("3. Withdraw Money\n");
    printf("4. View Balance\n");
    printf("5. View All Accounts\n");
    printf("6. Change Password\n");
    printf("7. Exit\n");
    printf("Enter your choice: ");
    scanf("%d", &choice);

    switch (choice) {
        case 1:
            createAccount();
            break;
        case 2:
            deposit();
            break;
        case 3:
            withdraw();
            break;
        case 4:
            viewBalance();
            break;
        case 5:
            printAllAccounts();
            break;
        case 6:
            changePassword();
            break;
        case 7:
            printf("Exiting the program. Goodbye!\n");
            exit(0);
        default:
            printf("Invalid choice. Please try again.\n");
    }
} while (1);

return 0;

}

void createAccount() { if (num_accounts >= MAX_ACCOUNTS) { printf("Maximum number of accounts reached. Cannot create more accounts.\n"); return; }

Account new_account;
printf("Enter the account number: ");
scanf("%d", &new_account.account_number);

// Check if account number already exists
if (isAccountExist(new_account.account_number)) {
    printf("An account with the same number already exists. Please enter a different account number.\n");
    return;
}

printf("Enter the account holder's name: ");
getchar(); // Consume the newline character left by previous scanf
fgets(new_account.account_holder, sizeof(new_account.account_holder), stdin);
new_account.account_holder[strcspn(new_account.account_holder, "\n")] = '\0'; // Remove trailing newline

printf("Set a password for the account: ");
getchar(); // Consume the newline character left by previous scanf
fgets(new_account.password, PASSWORD_LENGTH, stdin);
new_account.password[strcspn(new_account.password, "\n")] = '\0'; // Remove trailing newline

printf("Enter the initial balance: ");
scanf("%f", &new_account.balance);

accounts[num_accounts] = new_account;
num_accounts++;
printf("Account created successfully!\n");

}

void deposit() { int account_number; char password[PASSWORD_LENGTH]; float amount;

printf("Enter the account number: ");
scanf("%d", &account_number);

int account_index = -1;
for (int i = 0; i < num_accounts; i++) {
    if (accounts[i].account_number == account_number) {
        account_index = i;
        break;
    }
}

if (account_index == -1) {
    printf("Account not found. Please check the account number and try again.\n");
    return;
}

printf("Enter the account password: ");
getchar(); // Consume the newline character left by previous scanf
fgets(password, PASSWORD_LENGTH, stdin);
password[strcspn(password, "\n")] = '\0'; // Remove trailing newline

// Authenticate the account
if (!authenticateAccount(account_number, password)) {
    printf("Incorrect password. Access denied.\n");
    return;
}

printf("Enter the amount to deposit: ");
scanf("%f", &amount);

accounts[account_index].balance += amount;
printf("Deposit successful. New balance: %.2f\n", accounts[account_index].balance);

}

void withdraw() { int account_number; char password[PASSWORD_LENGTH]; float amount;

printf("Enter the account number: ");
scanf("%d", &account_number);

int account_index = -1;
for (int i = 0; i < num_accounts; i++) {
    if (accounts[i].account_number == account_number) {
        account_index = i;
        break;
    }
}

if (account_index == -1) {
    printf("Account not found. Please check the account number and try again.\n");
    return;
}

printf("Enter the account password: ");
getchar(); // Consume the newline character left by previous scanf
fgets(password, PASSWORD_LENGTH, stdin);
password[strcspn(password, "\n")] = '\0'; // Remove trailing newline

// Authenticate the account
if (!authenticateAccount(account_number, password)) {
    printf("Incorrect password. Access denied.\n");
    return;
}

printf("Enter the amount to withdraw: ");
scanf("%f", &amount);

if (amount > accounts[account_index].balance) {
    printf("Insufficient balance. Cannot withdraw.\n");
    return;
}

accounts[account_index].balance -= amount;
printf("Withdrawal successful. New balance: %.2f\n", accounts[account_index].balance);

}

void viewBalance() { int account_number; char password[PASSWORD_LENGTH];

printf("Enter the account number: ");
scanf("%d", &account_number);

int account_index = -1;
for (int i = 0; i < num_accounts; i++) {
    if (accounts[i].account_number == account_number) {
        account_index = i;
        break;
    }
}

if (account_index == -1) {
    printf("Account not found. Please check the account number and try again.\n");
    return;
}

printf("Enter the account password: ");
getchar(); // Consume the newline character left by previous scanf
fgets(password, PASSWORD_LENGTH, stdin);
password[strcspn(password, "\n")] = '\0'; // Remove trailing newline

// Authenticate the account
if (!authenticateAccount(account_number, password)) {
    printf("Incorrect password. Access denied.\n");
    return;
}

printf("Account Number: %d\n", accounts[account_index].account_number);
printf("Account Holder: %s\n", accounts[account_index].account_holder);
printf("Balance: %.2f\n", accounts[account_index].balance);

}

void printAllAccounts() { if (num_accounts == 0) { printf("No accounts found.\n"); return; }

char password[PASSWORD_LENGTH];

printf("Enter your password to view all accounts: ");
getchar(); // Consume the newline character left by previous scanf
fgets(password, PASSWORD_LENGTH, stdin);
password[strcspn(password, "\n")] = '\0'; // Remove trailing newline

// Authenticate the user
if (!authenticateAccount(0, password)) {
    printf("Incorrect password. Access denied.\n");
    return;
}

printf("\nAll Accounts:\n");
for (int i = 0; i < num_accounts; i++) {
    printf("Account Number: %d\n", accounts[i].account_number);
    printf("Account Holder: %s\n", accounts[i].account_holder);
    printf("Balance: %.2f\n\n", accounts[i].balance);
}

}

void changePassword() { int account_number; char current_password[PASSWORD_LENGTH]; char new_password[PASSWORD_LENGTH];

printf("Enter the account number: ");
scanf("%d", &account_number);

int account_index = -1;
for (int i = 0; i < num_accounts; i++) {
    if (accounts[i].account_number == account_number) {
        account_index = i;
        break;
    }
}

if (account_index == -1) {
    printf("Account not found. Please check the account number and try again.\n");
    return;
}

printf("Enter the current password: ");
getchar(); // Consume the newline character left by previous scanf
fgets(current_password, PASSWORD_LENGTH, stdin);
current_password[strcspn(current_password, "\n")] = '\0'; // Remove trailing newline

// Authenticate the account
if (!authenticateAccount(account_number, current_password)) {
    printf("Incorrect password. Access denied.\n");
    return;
}

printf("Enter the new password: ");
getchar(); // Consume the newline character left by previous scanf
fgets(new_password, PASSWORD_LENGTH, stdin);
new_password[strcspn(new_password, "\n")] = '\0'; // Remove trailing newline

strcpy(accounts[account_index].password, new_password);
printf("Password changed successfully!\n");

}

bool isAccountExist(int account_number) { for (int i = 0; i < num_accounts; i++) { if (accounts[i].account_number == account_number) { return true; } } return false; }

bool authenticateAccount(int account_number, char* password) { for (int i = 0; i < num_accounts; i++) { if (accounts[i].account_number == account_number && strcmp(accounts[i].password, password) == 0) { return true; } } return false; }