Atmstimulator.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_TRANSACTIONS 100

int i;

typedef struct
{
    char type[20];      // Deposit, Withdraw, Transfer
    float amount;       // Amount of the transaction
    char recipient[20]; // For transfers, store the recipient
    float balanceAfter; // Balance after the transaction
} Transaction;

typedef struct
{
    char name[20];                         // Name of the user
    float balance;                         // Account balance
    char password[20];                     // Password for the user
    Transaction history[MAX_TRANSACTIONS]; // Transaction history
    int transactionCount;                  // Number of transactions
} Deposit;

Deposit deposit[3] = {
    {"John", 20000, "1234", {}, 0},
    {"Ana", 30000, "4567", {}, 0},
    {"George", 24000, "7890", {}, 0}};

// Function to add a transaction to history
void addTransaction(const char *type, float amount, const char *recipient, float balanceAfter)
{
    Transaction *t = &deposit[i].history[deposit[i].transactionCount++];
    strcpy(t->type, type);
    t->amount = amount;
    strcpy(t->recipient, recipient);
    t->balanceAfter = balanceAfter;
}

void withdrawmoney()
{
    float amount;
    printf("\nEnter the amount to withdraw: ");
    scanf("%f", &amount);
    if (amount > deposit[i].balance)
    {
        printf("\nInsufficient balance.");
    }
    else
    {
        deposit[i].balance -= amount;
        printf("\nWithdrawal successful. Current balance: %.2f", deposit[i].balance);

        // Record the transaction
        addTransaction("Withdraw", amount, "-", deposit[i].balance);
    }
}

void transfer()
{
    float amount;
    char recipient[20];
    printf("\nEnter the recipient's name: ");
    scanf("%s", recipient);
    printf("Enter the amount to transfer: ");
    scanf("%f", &amount);

    // Check if recipient exists
    for (int j = 0; j < 3; j++)
    {
        if (strcmp(deposit[j].name, recipient) == 0)
        {
            if (amount > deposit[i].balance)
            {
                printf("\nInsufficient balance.");
                return;
            }
            else
            {
                deposit[i].balance -= amount;
                deposit[j].balance += amount;
                printf("\nTransfer successful. Your current balance: %.2f", deposit[i].balance);

                // Record the transaction for both users
                addTransaction("Transfer to", amount, recipient, deposit[i].balance);
                Transaction t = {"Transfer from", amount, "", deposit[j].balance};
                strcpy(t.recipient, deposit[i].name); // Copy sender's name
                deposit[j].history[deposit[j].transactionCount++] = t;
                return;
            }
        }
    }
    printf("\nRecipient not found.");
}

void checkbalance()
{
    printf("\nCurrent balance: %.2f", deposit[i].balance);
}

void depositAmount()
{
    float amount;
    printf("\nEnter the amount to be deposited: ");
    scanf("%f", &amount);
    deposit[i].balance += amount;
    printf("\nDeposit successful. Current balance: %.2f", deposit[i].balance);

    // Record the transaction
    addTransaction("Deposit", amount, "-", deposit[i].balance);
}

// Function to view transaction history
void viewTransactionHistory()
{
    printf("\nTransaction History for %s:\n", deposit[i].name);
    for (int j = 0; j < deposit[i].transactionCount; j++)
    {
        Transaction *t = &deposit[i].history[j];
        printf("Type: %s | Amount: %.2f | Recipient: %s | Balance After: %.2f\n", t->type, t->amount, t->recipient, t->balanceAfter);
    }
}

void operations()
{
    int choice;
    while (1)
    {
        printf("\nSelect the operation you want to perform:\n");
        printf("1. Deposit\n2. Check Balance\n3. Withdraw Money\n4. Transfer Money\n5. View Transaction History\n6. Exit\n");
        scanf("%d", &choice);
        switch (choice)
        {
        case 1:
            depositAmount();
            break;
        case 2:
            checkbalance();
            break;
        case 3:
            withdrawmoney();
            break;
        case 4:
            transfer();
            break;
        case 5:
            viewTransactionHistory();
            break;
        case 6:
            exit(0);
        default:
            printf("\nInvalid operation. Try again.");
        }
    }
}

int main()
{
    char name[20], password[20];
    printf("\n***************************ATM STIMULATOR****************************");
    printf("\nEnter the username: ");
    scanf("%s", name);
    printf("Enter the password: ");
    scanf("%s", password);

    for (i = 0; i < 3; i++)
    {
        if (strcmp(deposit[i].name, name) == 0 && strcmp(deposit[i].password, password) == 0)
        {
            printf("\nAccess granted.");
            operations();
            return 0; // Exit after operations are complete
        }
    }
    printf("\nInvalid username or password. Try again.");
    return 0; // Exit if access is denied
}