Question

I am reading a text file and trying to store the information into an array so I can use this in different parts of my program. So a dynamic array. So far I have been able to retrieve the information from the text file and organize it by category (User name,User ID, User password)

I am having troubles allocating an array and storing the information correctly. Since I have different data types (int, string) do I need to create a different array for each data type? Or do I create a stuct data type array? Here is my code so far.

#include <iostream>
#include <fstream>
#include <string>
#include "user_info.h"

using namespace std;

// Checks the to see how many users on the list

int list_check(){
int num_users;
ifstream user_Data ("users-1.txt"); // Txt file name
if(!user_Data.is_open()){
cout << "Unable to open file" << endl;
return 1;
}
if(user_Data.is_open()){
string line;
getline(user_Data, line, '\n');
num_users = stoi(line);
cout << "Number of users: " << line << endl;
}
user_Data.close();
return num_users;
}

// Prints the text file to the screen

void array_populate(int a){
ifstream user_Data ("users-1.txt");
if(user_Data.is_open()){
Database identity;
string line, dummy_hold;
for(int i = 0; i < a; i++){
getline(user_Data, dummy_hold, '\n');
getline(user_Data, line, ' ');
identity.name = line;
cout << "User name: " << line << endl;

// Store array.name[I] ??? Something like this??

getline(user_Data, line, ' ');
identity.id = stoi(line);
cout << "User ID: " << line << endl;

// Store array.id[I] ??? Something like this??

getline(user_Data, line, '\n');
identity.password = (line);
cout << "User password: " << line << endl;

// Store array.password[I] ??? Something like this??
}
}
user_Data.close();
}

int main() {
int num_users;
num_users = list_check();
array_populate(num_users);

return 0;

}

// Header file for struct and declarations for arrays?

#ifndef USER_INFO_H
#define USER_INFO_H

#include <iostream>
#include <string>

using namespace std;

struct Database{
int id;
string name;
string password;
};
#endif

Answer 1

#include <iostream>
#include <fstream>
#include <string>

#include "user_info.h"

using namespace std;

// Checks the to see how many users on the list

int list_check(){
   int num_users;
   ifstream user_Data ("users-1.txt"); // Txt file name
  
   if(!user_Data.is_open()){
       cout << "Unable to open file" << endl;
       return 1;
   }
  
   if(user_Data.is_open()){
       user_Data>>num_users;
      
       cout << "Number of users: " << num_users << endl;
   }
  
   user_Data.close();
  
   return num_users;
}

// Prints the text file to the screen

void array_populate(Database *d,int a){
  
   ifstream user_Data ("users-1.txt");
  
   if(user_Data.is_open()){
      
       int number;
       user_Data>>number;
      
       for(int i = 0; i < a; i++){
          
           string user;
           user_Data>>user;
          
           cout << "User name: " << user << endl;
          
           int id;
           user_Data>>id;
          
           cout << "User ID: " << id << endl;
          
           string password;
           user_Data>>password;
          
           cout << "User password: " << password<< endl;
          
           d[i].name=user;
           d[i].id=id;
           d[i].password=password;
          
       }
   }
   user_Data.close();
}

int main() {
   int num_users;
   num_users = list_check();
  

// dynamic array of Database
   Database *database=new Database[num_users];
  
   array_populate(database,num_users);

   return 0;

}

//////////////////////////////////

// Header file for struct and declarations for arrays?

#ifndef USER_INFO_H
#define USER_INFO_H

#include <iostream>
#include <string>

using namespace std;

struct Database{
int id;
string name;
string password;
};
#endif

//////////////