Bank Account in C++ https://repl.it/@abranhe/bank-cpp

account.cpp

#include <string>
#include "account.h"
using namespace std;

Account::Account(void):balance(0)
{
}

vector<string> Account::report()
{
  vector<string> r;
  r.push_back("Balance is " + to_string(balance));
  r.push_back("Transaction");
  for(auto t:log)
  {
    r.push_back(t.report());
  }
  r.push_back("----------------------");

  return r;
}

bool Account::deposit(int amt)
{
  if(amt >= 0)
  {
    balance += amt;
    log.push_back(Transaction(amt, "Deposit"));
    return true;
  }
  else
  {
    return false;
  }
}
bool Account::withdraw(int amt)
{
  if(amt >= 0)
  {
    if(balance >= amt)
    {
      balance -= amt;
      log.push_back(Transaction(amt, "Withdraw"));
      return true;
    }
    else
    {
      return false;
    }
  }
  else
  {
    return false;
  }
}

account.h

#include <vector>
#include <string>
#include "transaction.h"

class Account
{
  private:
    int balance;
    std::vector<Transaction> log;

  public:
    Account();
    std::vector<std::string> report();
    bool deposit(int amt);
    bool withdraw(int amt);
};

main.cpp

#include <iostream>
#include "account.h"

using namespace std;

int main()
{
  Account a1;
  a1.deposit(100);

  cout << "After deposition $10" << endl;
  for(auto s:a1.report())
  {
    cout << s << endl;
  }

  a1.withdraw(50);
  if(a1.withdraw(100))
  {
    cout << "second withdraw succeeds" << endl;
  }

  cout << "after withdrawing $50 then $100" << endl;

  for(auto s:a1.report())
  {
    cout << s << endl;
  }

  return 0;
}

transaction.cpp

#include "transaction.h"
using namespace std;

Transaction::Transaction(int amt, string kind):amount(amt), type(kind)
{
}

string Transaction::report()
{
  string r;
  r += "";
  r += type;
  r += " ";
  r += to_string(amount);
  
  return  r;
}

transaction.h

#include <string>

class Transaction
{
  private: 
    int amount;
    std::string type;

  public:
    Transaction(int amt, std::string kind);
    std::string report();
};