#include <iostream>
#include <iomanip>      //Needed for the showpoint and setprecison command
#include <fstream>      //Needed to use files
#include <string>       //Needed to use string variable
#include <conio>
using namespace std;
int main()
{
        char choice;
        string name;
        int hours;
        double charges, total;
 // Displays the menu choices  on the screen.
        cout << "\t\tInternet Service Provider\n";
        cout << "\t\t  Subscription Packages\n\n";
 cout << "A: For $9.95 per month, can get 10 hours of\n";
        cout << "   access. Additional hours are $2.00 per hour. \n\n" ;
        cout << "B: For $14.95 per month, you can get 20 hours\n";
        cout << "   of access. Additonal hours are $1.00 per hour. \n\n";
        cout << "C: For $19.95 per month unlimited access is provided.\n\n";
        cout << "Please enter your name. ";
        getline (cin, name);
        cout << "Which subscription package would you like? ";
        cin.get(choice);
        cout << fixed <<showpoint <<setprecision(2);
 

        if (choice == 'A' || choice == 'a')
        {
                cout << "How many hours did you use for this month? ";
                cin  >> hours;
                charges = 9.95;
                if (hours >=10)
                {
                total = charges + ((hours - 10) * 2.00);
                cout << name <<", your total payment for this month is $" << total <<endl;
                }
                else cout <<name << " , your total payment for this month is $";
                cout << charges << endl;
        }
        else if (choice == 'B' || choice == 'b')
        {
                cout << "How many hours did you use for this month? ";
                cin  >> hours;
                charges = 14.95;
                if (hours >=20)
                {
                total = charges + ((hours - 20) * 1.00) ;
                cout << name << ", your total payment for this month is $" << total << endl;
                }
                else
                cout << name << ", your total payment for this month is $" << charges << endl;
         }
        else if (choice == 'C' || choice == 'c')
        {
            charges  = 19.95;
            cout << name << ", your total payment for this month is $" << charges << endl;
        }
        else if
         (choice !='C' && choice != 'c' && hours >744)
        {       cout << "You must choose packages A, B, or C. Also, your hours\n";
                cout << "must not exceed 744.\n";
        }
        getch();
        return 0;
}
 

#include<iostream>
 
usingnamespace std;
#include<fstream>
#include<istream>
int main()
 

{
FILE *stream;
errno_t err;
if( (err = fopen_s( &stream, "test.txt", "w+" )) != 0 )
printf( "The file 'data2' was not opened\n" );
else
printf( "The file 'data2' was opened\n" );
 
char *names = "Test";
fwrite(names, sizeof(int), 1, stream);
 

if(stream)
if(fclose(stream))
printf("unable to close file stream");
return(0);
 

}

float bill = 12.32; // $12.32
ofstream out("subscriptionbill.txt");
out << "This is the header\n";
out << "Monthly bill: $" << bill << "\n";
// other stuff here