Input File Question

xian67 (4)
I'm trying to allow a user to enter a file name and if they do not have one default to one. However, I'm having an issue determining if it should be a do-while or if-else statement and the syntax. Below is my source code.

Thank you.

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#include <iostream>
#include <stdlib.h>
#include <string>
#include <math.h>
#include <iomanip>
#include <fstream>

using namespace std;

int main()

{
    string customer_id;
    char ticket_type;
    string event_num;
    string ticket_type_long;
    float ticket_price;
    int num_of_tickets_purchased;
    float fee;
    float total;
    int num_records = 0;
    ifstream inData;
    ofstream outData;
    float calc_total (int num_of_tickets_purchased, float ticket_price, float fee);
    float calc_fee (int num_of_tickets_purchased);
    string user_file;
    bool good_user_file;
    
    cout << fixed << showpoint;
    cout << setprecision(2);  
    
    inData.open("c:\\tickets.txt");
    inData.open (user_file.c_str());
    
    
    cout<<"Please enter the name of the file you wish to use including the extension." << endl;
    cin >> user_file;
    
    
    if(user_file = inData.open(user_file.c_str())
    
    else 
         user_file = inData.open("c:\\tickets.txt"
    
    
      
    
    
    
    //outData.open("c:\\ticketsales.txt");
    
       
    
    while(inData.eof() == false)
    {
       num_records++;
       inData >> customer_id >> ticket_type >> event_num >> ticket_price >> num_of_tickets_purchased;
       
       
       if(ticket_type == 'F')
       ticket_type_long = "Football";
       if(ticket_type == 'H')
       ticket_type_long = "Hockey";
       if(ticket_type == 'B')
       ticket_type_long = "Basketball";
       
       fee = calc_fee (num_of_tickets_purchased);
       total = calc_total (num_of_tickets_purchased, ticket_price, fee);      
           
      cout <<setw(8)<<"Customer"<<setw(8)<<"Type"<<setw(20)<<"Event ID" <<setw(8)<<"Total"<<endl;
      outData <<setw(8)<<"Customer"<<setw(8)<<"Type"<<setw(20)<<"Event ID" <<setw(8)<<"Total"<<endl;
      cout <<setw(5)<<customer_id<<setw(14)<<ticket_type_long<<setw(12)<<event_num<<setw(6)<<"$"<<total<<endl;
      outData << setw(5)<<customer_id<<setw(14)<<ticket_type_long<<setw(12)<<event_num<<setw(6)<<"$"<<total<<endl;
      cout << endl;
   }
   
   cout << "Record count:" << num_records << endl;
    inData.close();
    outData.close();
    system("pause");
    return 0;
    
}   

 float calc_fee (int num_of_tickets_purchased)//function to calculate fee 
       {   
       float fee;
           
          if(num_of_tickets_purchased == 1)
            {
             fee = 0;
             }
          else if(num_of_tickets_purchased == 2)
           {
             fee = 3 * num_of_tickets_purchased;
             } 
          else if((num_of_tickets_purchased >= 3)&&(num_of_tickets_purchased <=6))
            {  
             fee = 3.5 * num_of_tickets_purchased;
             }
          else if(num_of_tickets_purchased >= 7)
            {
             fee = 5.5 * num_of_tickets_purchased;
             }
             return fee;
       }     
             
   float calc_total (int num_of_tickets_purchased, float ticket_price, float fee)//function to calculate total
         {
             float total;
             if(num_of_tickets_purchased == 1)
            {
             total = ticket_price * num_of_tickets_purchased;
             }
          else if(num_of_tickets_purchased == 2)
           {
             total = fee + (ticket_price * num_of_tickets_purchased);
             } 
          else if((num_of_tickets_purchased >= 3)&&(num_of_tickets_purchased <=6))
            {  
             total = fee + (ticket_price * num_of_tickets_purchased);
             }
          else if(num_of_tickets_purchased >= 7)
            {
             total = fee + (ticket_price * num_of_tickets_purchased);
             }
             return total;
          
          }
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