Can I get help with my project below. I'm a beginner and I'm finding it very difficult to come up with a code that acctually runs

#include <iostream>
#include <fstream>
#include <stdlib.h>
using namespace std;

class account
{
    int accno;
    char name[50];
    int deposit;
    string type;

public:
       void create_account();
       void show_account();
       void modify();
       void dep(int);
       void draw(int);
       void report();
       int retacno();
       int retdeposit();
       string rettype();
};

   void account::create_account()
  {
   {
     ofstream accFile;
     accFile.open("new ac.txt");
     if(accFile.is_open() )
    {

     cout<<"Please enter the account number :\n"<<endl;
     cin>>accno;
     accFile << accno;

     cout<<"Enter the account holders name :\n"<<endl;
     cin>>name;
     accFile<<name;

     cout<<"Choose account type (Current/Savings):\n"<<endl;
     cin>>type;
     accFile<<type;
     cout<<"Enter initial deposit (>P250): \n"<<endl;
     cin>>deposit;
     accFile<<deposit
     accFile.close();
     }
     else
    cout<<"Unable to open file";
   }
     cout<<"\nDear Client, you account has been succesfully created";

   }


   void account::show_account()
   {
     cout<<"\n\n******************ACCOUNT DETAILS*********************\n";
     cout<<"\n\n--------------------------------------------------------------------\n";
     cout<<"ACCOUNT NAME     NAMES        ACCOUNT TYPE     ACCOOUNT BALANCE\n";
     cout<<"-----------------------------------------------------------------------\n";
     std::cin>>accno\t>>name\t>>type\t>>deposit>>;
     std::cout<<accno\t<<name\t<<type\t<<deposit<<;
   }

   void account::modify()
   {
 {   ofstream accFile;
     accFile.open("new ac.txt");
     if(accFile.is_open() )

     cout<<"\nAccount No.:" <<accno;
     cout<<"\nChange Account Holder's Name:";
     cin.getline(name,50);
     accFile<<accno;
     cout<<"\nChange Account Type:";
     cin>>type;
     accFile<<type;
     cout<<"\nAccount changes saved";
   }

    void account::dep(int a)
    {
        deposit+=a;
    }

    void account::draw(int a)
    {
        deposit-=a;
    }

    void account::report()
    {
        cout<<accno<<"\t"<<name<<"\t"<<deposit<<endl;
    }
    int account::retacno()
    {
        return accno;
    }
    int account::retdeposit()
    {
        return deposit;
    }

    string account::rettype()
    {
        return type;
    }

   void account :: create_account();	//function to write record in file
   void show_sp(int);	//function to display account details given by user
   void modify_acc(int);	//function to modify record of file
   void delete_acc(int);	//function to delete record of file
   void show_all();		//function to display all account details
   void deposit_withdraw(int, int); //

int main()
{

  char ch;
  int accnum;
  int option;
  do
  {
      system("cls");
      cout<<"\n\t WELCOME TO THE MAIN MENU";
      cout<<"***SELECT AN OPTION (1-8)***";
      cout<<"\n\t 1. NEW ACCOUNT";
      cout<<"\n\t 2. DEPOSITS";
      cout<<"\n\t  3. WITHDRAWALS";
      cout<<"\n\t  4. BALANCE ENQUIRY";
      cout<<"\n\t  5. SHOW ACCOUNT DETAILS";
      cout<<"\n\t  6. ACCOUNT CLOSURES";
      cout<<"\n\t  7. ACCOUNT MODIFICATIONS";
      cout<<"\n\t  8. EXIT";
      cin>>option;
      system("cls");

      switch(option)
    {
    case 1:
          void account:: reate_account();
           break;
    case 2:
           cout<<"\n Enter Your Account Number:";
           cin>>accnum;
           deposit_withdraw(accnum,1);
           break;
    case 3:
           cout<<"\n Enter Your Account Number:";
           cin>>accnum;
           deposit_withdraw(accnum,2);
           break;
    case 4:
           cout<<"\n Enter Your Account Number:";
           cin>>accnum;
           show_sp(accnum);
           break;
    case 5:
           show_all();
           break;
    case 6:
           cout<<"\n Enter Your Account Number:";
           cin>>accnum;
           delete_acc(accnum);
           break;
    case 7:
           cout<<"\n Enter Your Account Number:";
           cin>>accnum;
           modify_acc(accnum);
           break;
    case 8:
           cout<<"\n Thank You For Using Bank123";
           break;
    default :cout<<"\a";
  }
   cin.ignore();
   option = cin.get();
 }while(option != 8);

  return 0;

}