#include <stdio.h>
#include <string.h>
 
// Structure definition for Bank Account
struct BankAccount {
    int accountNumber;
    char name[50];
    float balance;
};
 
// Function declarations
void createAccount(struct BankAccount accounts[], int *n);
void displayAccounts(struct BankAccount accounts[], int n);
void depositMoney(struct BankAccount accounts[], int n);
void withdrawMoney(struct BankAccount accounts[], int n);
void searchAccount(struct BankAccount accounts[], int n);
 
int main() {
    struct BankAccount accounts[100];
    int n = 0, choice;
 
    do {
        printf("\n====== BANK ACCOUNT MANAGEMENT SYSTEM ======\n");
        printf("1. Create New Account\n");
        printf("2. Display All Accounts\n");
        printf("3. Deposit Money\n");
        printf("4. Withdraw Money\n");
        printf("5. Search Account\n");
        printf("6. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);
 
        switch (choice) {
            case 1:
                createAccount(accounts, &n);
                break;
            case 2:
                displayAccounts(accounts, n);
                break;
            case 3:
                depositMoney(accounts, n);
                break;
            case 4:
                withdrawMoney(accounts, n);
                break;
            case 5:
                searchAccount(accounts, n);
                break;
            case 6:
                printf("Exiting... Thank you!\n");
                break;
            default:
                printf("Invalid choice! Try again.\n");
        }
    } while (choice != 6);
 
    return 0;
}
 
// Function to create a new account
void createAccount(struct BankAccount accounts[], int *n) {
    printf("\nEnter Account Number: ");
    scanf("%d", &accounts[*n].accountNumber);
    printf("Enter Account Holder Name: ");
    getchar(); // to clear newline character
    gets(accounts[*n].name);
    printf("Enter Initial Balance: ");
    scanf("%f", &accounts[*n].balance);
 
    (*n)++;
    printf(" Account created successfully!\n");
}
 
// Function to display all accounts
void displayAccounts(struct BankAccount accounts[], int n) {
    if (n == 0) {
        printf("\nNo accounts available!\n");
        return;
    }
    printf("\n----- ACCOUNT DETAILS -----\n");
    for (int i = 0; i < n; i++) {
        printf("\nAccount Number: %d\n", accounts[i].accountNumber);
        printf("Name: %s\n", accounts[i].name);
        printf("Balance: ₹%.2f\n", accounts[i].balance);
    }
}
 
// Function to deposit money
void depositMoney(struct BankAccount accounts[], int n) {
    int accNo, i, found = 0;
    float amount;
 
    printf("\nEnter Account Number: ");
    scanf("%d", &accNo);
 
    for (i = 0; i < n; i++) {
        if (accounts[i].accountNumber == accNo) {
            printf("Enter amount to deposit: ₹");
            scanf("%f", &amount);
            accounts[i].balance += amount;
            printf(" Amount deposited successfully!\n");
            printf("Updated Balance: ₹%.2f\n", accounts[i].balance);
            found = 1;
            break;
        }
    }
 
    if (!found)
        printf(" Account not found!\n");
}
 
// Function to withdraw money
void withdrawMoney(struct BankAccount accounts[], int n) {
    int accNo, i, found = 0;
    float amount;
 
    printf("\nEnter Account Number: ");
    scanf("%d", &accNo);
 
    for (i = 0; i < n; i++) {
        if (accounts[i].accountNumber == accNo) {
            printf("Enter amount to withdraw: ₹");
            scanf("%f", &amount);
 
            if (amount > accounts[i].balance)
                printf(" Insufficient balance!\n");
            else {
                accounts[i].balance -= amount;
                printf(" Withdrawal successful!\n");
                printf("Remaining Balance: ₹%.2f\n", accounts[i].balance);
            }
            found = 1;
            break;
        }
    }
 
    if (!found)
        printf(" Account not found!\n");
}
 
// Function to search account by number
void searchAccount(struct BankAccount accounts[], int n) {
    int accNo, i, found = 0;
 
    printf("\nEnter Account Number to search: ");
    scanf("%d", &accNo);
 
    for (i = 0; i < n; i++) {
        if (accounts[i].accountNumber == accNo) {
            printf("\nAccount Found!\n");
            printf("Account Number: %d\n", accounts[i].accountNumber);
            printf("Name: %s\n", accounts[i].name);
            printf("Balance: ₹%.2f\n", accounts[i].balance);
            found = 1;
            break;
        }
    }
 
    if (!found)
        printf(" Account not found!\n");
}