有人能看看我这个代码为什么内存不足吗
#include <iostream>#include <string>
#include <vector>
#include <algorithm>
#include <fstream>
using namespace std;
// 存储账户信息的结构体
struct AccountInfo {
string name;
string password;
string phone;
double balance;
bool isLost;
};
// 存储交易记录的结构体
struct Transaction {
string type;
double amount;
double fee;
};
class Account {
private:
AccountInfo info;
vector<Transaction> transactions;
public:
Account(string name, string password, string phone, double balance) {
info = {name, password, phone, balance, false};
}
~Account() {}
// 公有的交易记录访问接口
const vector<Transaction>& get_transactions() const { return transactions; }
// 存款
bool deposit(double amount) {
if (amount > 0) {
info.balance += amount;
Transaction t = {"Deposit", amount, 0};
transactions.push_back(t);
return true;
}
return false;
}
// 取款
bool withdraw(double amount, double fee) {
if (amount + fee <= info.balance && amount > 0 && fee >= 0) {
info.balance -= (amount + fee);
Transaction t = {"Withdraw", amount, fee};
transactions.push_back(t);
return true;
}
return false;
}
// 查询余额
double getBalance() const {
return info.balance;
}
// 查询交易记录
void printTransactions() const {
cout << "Transaction history:\n";
for (const auto& t : transactions) {
cout << " " << t.type << " " << t.amount << " fee: " << t.fee << endl;
}
}
// 判断账户是否挂失
bool isLost() const {
return info.isLost;
}
// 设置账户挂失状态
void setLost(bool lost) {
info.isLost = lost;
}
// 获取账户信息
AccountInfo getInfo() const {
return info;
}
};
// 保存所有账户的信息，以文本文件的格式存储
void saveAccounts(const vector<Account>& accounts) {
ofstream outfile("accounts.txt");
for (const auto& acc : accounts) {
outfile << acc.getInfo().name << " " << acc.getInfo().password << " "
<< acc.getInfo().phone << " " << acc.getInfo().balance << " "
<< acc.isLost() << endl;
}
outfile.close();
}
// 读取账户信息文件，返回所有账户信息
vector<AccountInfo> readAccountInfo() {
vector<AccountInfo> accounts;
ifstream infile("accounts.txt");
while (true) {
string name, password, phone, isLostStr;
double balance;
infile >> name >> password >> phone >> balance >> isLostStr;
if (infile.eof()) break;
bool isLost = (isLostStr == "1");
AccountInfo info = {name, password, phone, balance, isLost};
accounts.push_back(info);
}
infile.close();
return accounts;
}
// 加载所有账户信息
vector<Account> loadAccounts() {
vector<Account> accounts;
vector<AccountInfo> accountInfos = readAccountInfo();
for (const auto& info : accountInfos) {
Account account(info.name, info.password, info.phone, info.balance);
if (info.isLost) {
account.setLost(true);
}
accounts.push_back(account);
}
return accounts;
}
// 保存交易记录，以文本文件的格式存储
void saveTransactions(const vector<Account>& accounts) {
ofstream outfile("transactions.txt");
for (const auto& acc : accounts) {
const vector<Transaction>& transactions = acc.get_transactions();
for (const auto& t : transactions) {
outfile << acc.getInfo().name << " " << t.type << " " << t.amount << " " << t.fee << endl;
}
}
outfile.close();
}
// 读取交易记录文件，返回所有交易记录
vector<Transaction> readTransactions() {
vector<Transaction> transactions;
ifstream infile("transactions.txt");
while (true) {
string name, type;
double amount, fee;
infile >> name >> type >> amount >> fee;
if (infile.eof()) break;
Transaction t = {type, amount, fee};
transactions.push_back(t);
}
infile.close();
return transactions;
}
// 加载所有交易记录
void loadTransactions(vector<Account>& accounts) {
vector<Transaction> transactions = readTransactions();
for (auto& acc : accounts) {
for (const auto& t : transactions) {
string name = acc.getInfo().name;
if (t.type == "Deposit" && name == acc.getInfo().name) {
acc.deposit(t.amount);
} else if (t.type == "Withdraw" && name == acc.getInfo().name) {
acc.withdraw(t.amount, t.fee);
}
}
}
}
int main() {
// 加载账户和交易记录
vector<Account> accounts = loadAccounts();
loadTransactions(accounts);
// 输出菜单
cout << "Menu:\n"
<< " 1. Create new account.\n"
<< " 2. Close account.\n"
<< " 3. Report lost.\n"
<< " 4. Deposit.\n"
<< " 5. Withdraw.\n"
<< " 6. Query balance.\n"
<< " 7. Transaction history.\n"
<< " 8. Exit.\n";
while (true) {
int choice;
cout << "Please enter your choice: ";
cin >> choice;
if (choice == 1) { // 开户
string name, password, phone;
double balance;
cout << "Please enter your name: ";
cin >> name;
cout << "Please enter your password: ";
cin >> password;
cout << "Please enter your phone: ";
cin >> phone;
cout << "Please enter the initial deposit amount: ";
cin >> balance;
Account account(name, password, phone, balance);
accounts.push_back(account);
saveAccounts(accounts);
} else if (choice == 2) { // 销户
string name;
cout << "Please enter your name: ";
cin >> name;
for (auto it = accounts.begin(); it != accounts.end(); ++it) {
if (it->getInfo().name == name) {
accounts.erase(it);
break;
}
}
saveAccounts(accounts);
} else if (choice == 3) { // 挂失
string name;
cout << "Please enter your name: ";
cin >> name;
for (auto& acc : accounts) {
if (acc.getInfo().name == name) {
acc.setLost(true);
break;
}
}
saveAccounts(accounts);
} else if (choice == 4) { // 存款
string name;
double amount;
cout << "Please enter your name: ";
cin >> name;
auto it = find_if(accounts.begin(), accounts.end(), [&](const Account& acc) {
return acc.getInfo().name == name;
});
if (it == accounts.end()) {
cout << "Account does not exist.\n";
} else if (it->isLost()) {
cout << "Account is lost.\n";
} else {
cout << "Please enter the deposit amount: ";
cin >> amount;
if (it->deposit(amount)) {
saveTransactions(accounts);
cout << "Deposit successful.\n";
} else {
cout << "Deposit failed.\n";
}
}
} else if (choice == 5) { // 取款
string name;
double amount, fee;
cout << "Please enter your name: ";
cin >> name;
auto it = find_if(accounts.begin(), accounts.end(), [&](const Account& acc) {
return acc.getInfo().name == name;
});
if (it == accounts.end()) {
cout << "Account does not exist.\n";
} else if (it->isLost()) {
cout << "Account is lost.\n";
} else {
cout << "Please enter the withdraw amount: ";
cin >> amount;
cout << "Please enter the fee amount: ";
cin >> fee;
if (it->withdraw(amount, fee)) {
saveTransactions(accounts);
cout << "Withdraw successful.\n";
} else {
cout << "Withdraw failed.\n";
}
}
} else if (choice == 6) { // 查询余额
string name;
cout << "Please enter your name: ";
cin >> name;
auto it = find_if(accounts.begin(), accounts.end(), [&](const Account& acc) {
return acc.getInfo().name == name;
});
if (it == accounts.end()) {
cout << "Account does not exist.\n";
} else if (it->isLost()) {
cout << "Account is lost.\n";
} else {
cout << "Your balance is: " << it->getBalance() << endl;
}
} else if (choice == 7) { // 查询历史交易记录
string name;
cout << "Please enter your name: ";
cin >> name;
auto it = find_if(accounts.begin(), accounts.end(), [&](const Account& acc) {
return acc.getInfo().name == name;
});
if (it == accounts.end()) {
cout << "Account does not exist.\n";
} else {
it->printTransactions();
}
} else if (choice == 8) { // 退出程序
cout << "Goodbye.\n";
break;
} else { // 非法输入
cout << "Invalid input. Please try again.\n";
}
}
return 0;
}
运行出来就是现实内存不足，刚学没多久，求指点，拜托
程序代码：