diff --git a/Account.h b/Account.h
new file mode 100644
index 0000000..64abbec
--- /dev/null
+++ b/Account.h
@@ -0,0 +1,104 @@
+#include<fstream>
+#include<string>
+#include<string>
+#include<graphics.h>
+
+bool CusInputBox(char* input, int length, const char* prompt) {
+	std::cout << prompt << std::endl;
+	std::cin.getline(input, length);
+	return true;
+}
+class Account {
+private:
+	int num;
+	std::string* username;
+	std::string* password;
+public:
+	Account() {
+		username = NULL;
+		password = NULL;
+		num = 0;
+	}
+	int& get_num() {
+		return num;
+	}
+	std::string*& get_username() {
+		return username;
+	}
+	std::string*& get_password() {
+		return password;
+	}
+	// 查找输入是否在用户名队列之中
+	int find_username(std::string input) {
+		for (int i = 0; i < num; i++) {
+			if (input == username[i]) return i;
+		}
+		return -1; // 若不在用户名队列之中则返回-1
+	}
+	// 用户名与密码是否对应
+	bool is_correct(int i, std::string input) {
+		return input == password[i];
+	}
+};
+
+void init_Account(Account& account) {
+	std::fstream filename;
+	filename.open("account.txt");
+	filename >> account.get_num();
+	int n = account.get_num();
+	account.get_username() = new std::string[n];
+	account.get_password() = new std::string[n];
+	for (int i = 0; i < n; i++) {
+		filename >> account.get_username()[i];
+		filename >> account.get_password()[i];
+	}
+	
+}
+
+
+
+
+
+void log_in_2(Account& account) {
+	init_Account(account);
+	bool is_cancel = false;
+	std::string username;
+	std::string password;
+	int i = 0;
+	char temp_username[256];
+	char temp_password[256];
+
+	while (true) {
+		bool correct = false;
+		is_cancel = !InputBox((LPTSTR) & (temp_username), 10, (LPCTSTR)"请输入用户名：", (LPCTSTR)"登录", (LPCTSTR)"0", 0, 0, 0);
+		// is_cancel = !CusInputBox(tempInput, 256, "请输入用户名：");
+		if (is_cancel) exit(0);
+		else {
+			username = temp_username;
+			for (i = 0; i < account.get_num(); i++) {
+				std::string tempstr = account.get_username()[i];
+				// username = (std::string)username;
+				if (tempstr == username) {
+					correct = true;
+					break;
+				}
+			}
+			if (!correct) ::MessageBox(GetHWnd(), (LPCTSTR)"无此用户，请重输", (LPCTSTR)"打开", MB_OK); //提示框
+		}
+		if (correct) break;
+	}
+	while (true) {
+		bool correct = false;
+		is_cancel = !InputBox((LPTSTR) & (temp_password), 10, (LPCTSTR)"请输入密码：", (LPCTSTR)"登录", (LPCTSTR)"0", 0, 0, 0);
+		if (is_cancel) exit(0);
+		else {
+			password = temp_password;
+			if (account.get_password()[i] == password) correct = true;
+			if (!correct) ::MessageBox(GetHWnd(), (LPCTSTR)"密码错误，请重输", (LPCTSTR)"登录", MB_OK); //提示框
+		}
+		if (correct) {
+			break;
+		}
+	}
+	::MessageBox(GetHWnd(), (LPCTSTR)"登陆成功！", (LPCTSTR)"Hello", MB_OK);
+}
\ No newline at end of file