我是 C 的新手，我正在嘗試制作一個簡單的登錄系統。我目前正在注冊一個新用戶，我想為該用戶創建一個目錄，然后我可以在以后保存他們的資訊。我可以創建一個名為“User”的目錄，但我想傳入一個引數而不是 User，但無論如何我都找不到這樣做的方法。有什么建議嗎？
#include <string>
#include <iostream>
#include <array>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <bits/stdc .h>
#include "User.h"
User::User()
{
//default values
user_name = "user";
password = "12345";
}
void User::CreateNewUser()
{
PromptForNewUserName();
MakeNewUserDir();
}
void User::SetUserName(std::string new_user_name)
{
user_name = new_user_name;
}
void User::SetPassword(std::string new_password)
{
password = new_password;
}
std::string User::GetName()
{
return user_name;
}
void User::PromptForNewUserName()
{
bool is_new_name = false;
std::string temp_user_name = "user";
do
{
std::cout << "Enter your name: ";
std::cin >> temp_user_name;
if(GetName() != temp_user_name)
{
SetUserName(temp_user_name);
is_new_name = true;
}else {std::cout << "That user name is already in use." << std::endl; is_new_name = false;}
}while(!is_new_name);
}
void User::PromptForNewPassword()
{
}
void User::PasswordReset()
{
}
void User::MakeNewUserDir()
{
if(!GetName().empty())
{
int check;
int name_length = GetName().length();
char name_array[name_length 1];
// copies get name in to char array since mkdir takes in a char not a string
strcpy(name_array, GetName().c_str());
// mkdir returns an int, so we can assign it to check
check = mkdir("C:/Users/3192833/Documents/MobaXterm/Lee/LinuxCheater/User", 0777);
// check if the directory is created or not
if(!check)
{
std::cout << std::endl;
const char* name_array_ptr = name_array;
rename("User", name_array_ptr);
std::cout << "\nAn account has been created for " << GetName() << std::endl;
}else{
printf("Unable to create account\n");
exit(1);
}
}
}
uj5u.com熱心網友回復：
添加#include <string>到源檔案的頂部
將您的 MakeNewUserDir() 函式更改為宣告和定義如下：
void User::MakeNewUserDir(const std::string& path)
您可能還需要在類宣告中進行類似的更改。
然后你呼叫mkdir如下：
check = mkdir(path.c_str(), 0777);
然后，當您想使用引數呼叫 MakeNewUserDir 時，您可以傳遞字串文字、std::string 的另一個實體或char*基于 C 的字串。
User u;
u.MakeNewUserDir("C:/Users/3192833/Documents/MobaXterm/Lee/LinuxCheater/User");
或者
std::string s = "C:/Users/3192833/Documents/MobaXterm/Lee/LinuxCheater";
s = "/User";
u.MakeNewuserDir(s);
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