/* Build a program for managing a bank.
There should be a database of bank
accounts and transactions. We should
be able to add new accounts,
new transactions (credit/debit) and
compute the balance of a account */
#include <stdio.h>
#include <string.h>
typedef enum AccountType {
Savings,
Current
} AccountType;
typedef enum TransactionType {
Credit,
Debit
} TransactionType;
typedef struct Transaction {
TransactionType type;
struct BankAccount* account;
int amount;
} Transaction;
typedef struct BankAccount {
char name[100];
int pin;
AccountType type;
// passbook is an array of transactions
// pointers to avoid taking too much memory
struct Transaction* passbook[1000];
int transactions_count;
} BankAccount;
typedef struct BankDatabase {
BankAccount accounts[1000];
Transaction transactions[10000];
int accounts_count;
int transactions_count;
} BankDatabase;
// compute the total amount of money
// with the bank amoung all the accounts
int compute_money_with_bank(
BankDatabase* db) {
int sum = 0;
for(int i = 0;
i < db->transactions_count; i++) {
switch(db->transactions[i].type) {
case Credit:
sum += db->transactions[i].amount;
break;
case Debit:
sum -= db->transactions[i].amount;
break;
}
}
return sum;
}
int compute_balance(BankAccount* acc) {
// Problem 2 a.) fill in the code to
// find the balance of the account
// 'acc'.(3 marks)
}
BankAccount* add_bank_account(char* name,
int pin, AccountType type,
BankDatabase* db) {
// Problem 2 b.) fill in the code to add
// a new account 'acc' to the bank
// database 'db'. The function should
// also return a pointer to the bank
// account created in 'db'. (3 marks)
}
Transaction* add_transaction(
TransactionType type,
BankAccount *account,
int amount, BankDatabase* db) {
// Problem 2 c.) Fill in the code for
// adding a transaction to the system.
// The logic should be written such
// that the all the other functions in
// this program continue to work
// correctly. (4 marks)
}
int main() {
BankDatabase db;
db.accounts_count = db.transactions_count = 0;
BankAccount acc = { .pin = 1234,
.transactions_count = 0};
strcpy(acc.name, "Ivan");
BankAccount* acc_ptr = add_bank_account(
acc.name,acc.pin,acc.type, &db);
add_transaction(Credit, acc_ptr, 10000, &db);
add_transaction(Debit, acc_ptr, 2000, &db);
add_transaction(Credit, acc_ptr, 5000, &db);
// should print 13000
printf("Account balance is %d\n",
compute_balance(acc_ptr));
BankAccount acc2 = { .pin = 6897,
.transactions_count = 0};
strcpy(acc2.name, "Jake");
BankAccount* acc_ptr2 = add_bank_account(
acc2.name, acc2.pin,acc2.type, &db);
add_transaction(Credit, acc_ptr2, 100000, &db);
add_transaction(Debit, acc_ptr2, 20000, &db);
add_transaction(Credit, acc_ptr2, 50000, &db);
// should print 130000
printf("Account balance is %d\n",
compute_balance(acc_ptr2));
// should print 143000
printf("Total Money with bank is %d\n",
compute_money_with_bank(&db));
}
