Password Manager Gaming Project in C++

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3 months ago

#include <iostream>
#include <fstream>
#include <string>
#include <map>

void addPassword(std::map<std::string, std::string>& passwords) {
    std::string account, password;
    std::cout << "Enter account name: ";
    std::cin.ignore();
    std::getline(std::cin, account);
    std::cout << "Enter password: ";
    std::getline(std::cin, password);
    passwords[account] = password;
    std::cout << "Password added successfully.\n";
}

void viewPasswords(const std::map<std::string, std::string>& passwords) {
    if (passwords.empty()) {
        std::cout << "No passwords stored.\n";
        return;
    }
    std::cout << "Stored passwords:\n";
    for (const auto& entry : passwords) {
        std::cout << "Account: " << entry.first << " | Password: " << entry.second << '\n';
    }
}

void savePasswords(const std::map<std::string, std::string>& passwords) {
    std::ofstream file("passwords.txt");
    if (!file) {
        std::cerr << "Error opening file for writing.\n";
        return;
    }
    for (const auto& entry : passwords) {
        file << entry.first << '\n' << entry.second << '\n';
    }
    file.close();
    std::cout << "Passwords saved successfully.\n";
}

void loadPasswords(std::map<std::string, std::string>& passwords) {
    std::ifstream file("passwords.txt");
    if (!file) {
        std::cerr << "Error opening file for reading.\n";
        return;
    }
    std::string account, password;
    while (std::getline(file, account) && std::getline(file, password)) {
        passwords[account] = password;
    }
    file.close();
}

int main() {
    std::map<std::string, std::string> passwords;
    loadPasswords(passwords);

    int choice;
    while (true) {
        std::cout << "Password Manager\n";
        std::cout << "1. Add Password\n";
        std::cout << "2. View Passwords\n";
        std::cout << "3. Save and Exit\n";
        std::cout << "Enter your choice: ";
        std::cin >> choice;

        switch (choice) {
            case 1:
                addPassword(passwords);
                break;
            case 2:
                viewPasswords(passwords);
                break;
            case 3:
                savePasswords(passwords);
                return 0;
            default:
                std::cout << "Invalid choice. Please try again.\n";
        }
    }

    return 0;
}

#include <iostream>

#include <fstream>

#include <string>

#include <map>

void addPassword(std::map<std::string, std::string>& passwords) {

std::string account, password;

std::cout << "Enter account name: ";

std::cin.ignore();

std::getline(std::cin, account);

std::cout << "Enter password: ";

std::getline(std::cin, password);

passwords[account] = password;

std::cout << "Password added successfully.\n";

}

void viewPasswords(const std::map<std::string, std::string>& passwords) {

if (passwords.empty()) {

std::cout << "No passwords stored.\n";

return;

}

std::cout << "Stored passwords:\n";

for (const auto& entry : passwords) {

std::cout << "Account: " << entry.first << " | Password: " << entry.second << '\n';

}

void savePasswords(const std::map<std::string, std::string>& passwords) {

std::ofstream file("passwords.txt");

if (!file) {

std::cerr << "Error opening file for writing.\n";

return;

}

for (const auto& entry : passwords) {

file << entry.first << '\n' << entry.second << '\n';

}

file.close();

std::cout << "Passwords saved successfully.\n";

}

void loadPasswords(std::map<std::string, std::string>& passwords) {

std::ifstream file("passwords.txt");

if (!file) {

std::cerr << "Error opening file for reading.\n";

return;

}

std::string account, password;

while (std::getline(file, account) && std::getline(file, password)) {

passwords[account] = password;

}

file.close();

}

int main() {

std::map<std::string, std::string> passwords;

loadPasswords(passwords);

int choice;

while (true) {

std::cout << "Password Manager\n";

std::cout << "1. Add Password\n";

std::cout << "2. View Passwords\n";

std::cout << "3. Save and Exit\n";

std::cout << "Enter your choice: ";

std::cin >> choice;

switch (choice) {

case 1:

addPassword(passwords);

break;

case 2:

viewPasswords(passwords);

break;

case 3:

savePasswords(passwords);

return 0;

default:

std::cout << "Invalid choice. Please try again.\n";

}

return 0;

}

Explanation:

Include Headers:
- #include <iostream>: For input and output operations.
- #include <fstream>: For file operations.
- #include <string>: For string manipulations.
- #include <map>: For using the std::map container to store account-password pairs.
Functions:
- addPassword: Prompts the user to enter an account name and password, then stores these in the passwords map.
- viewPasswords: Displays all stored account-password pairs. If no passwords are stored, it informs the user.
- savePasswords: Saves the account-password pairs from the passwords map to a text file named passwords.txt.
- loadPasswords: Loads account-password pairs from passwords.txt into the passwords map. This allows the program to persist passwords between runs.
Main Function:
- Load Passwords: Calls loadPasswords to populate the passwords map from the file at the start.
- Menu Loop: Displays a menu for the user to choose between adding passwords, viewing passwords, or saving and exiting.
- Choice Handling: Uses a switch statement to handle user choices. Calls appropriate functions based on user input.
File Format:

Passwords are saved in a text file with each account and its corresponding password on separate lines. This format is simple and easy to read/write, but not secure. For better security, consider using encryption.

Compilation and Execution:

Compile the Program:

g++ -o password_manager password_manager.cpp

1	g++ -o password_manager password_manager.cpp

Run the Program:

./password_manager

1	./password_manager

Explanation:

Compilation and Execution:

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