fstream

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

int main(){
    // Variables
    char ticketPrice[80], numberOfTicketsSold[80];
    // Opening sales1.txt
    fstream file;
    file.open("sales1.txt");
    /* Inputs for:
    ticketPrice numberOfTicketsSold

    250.75 5750
    100.50 28000
    50.25 35750
    25.00 18750

    */
    // atof converts char to float
    // first_set to fourth_set contains numberOfTicketsSold for totalNumberOfTicketsSold
    // first_data to fourth_data contains the values of the product of ticketPrice and numberOfTicketsSold for totalSaleAmount
    // cout with tabs shows sample set
    file >> ticketPrice >> numberOfTicketsSold;
    //cout << ticketPrice << "\t" << numberOfTicketsSold << endl;
    float first_set = atof(numberOfTicketsSold);
    float first_data = atof(ticketPrice) * atof(numberOfTicketsSold);
    file >> ticketPrice >> numberOfTicketsSold;
    //cout << ticketPrice << "\t" << numberOfTicketsSold << endl;
    float second_set = atof(numberOfTicketsSold);
    float second_data = atof(ticketPrice) * atof(numberOfTicketsSold);
    file >> ticketPrice >> numberOfTicketsSold;
    //cout << ticketPrice << "\t" << numberOfTicketsSold << endl;
    float third_set = atof(numberOfTicketsSold);
    float third_data = atof(ticketPrice) * atof(numberOfTicketsSold);
    file >> ticketPrice >> numberOfTicketsSold;
    //cout << ticketPrice << "\t" << numberOfTicketsSold << endl;
    float fourth_set = atof(numberOfTicketsSold);
    float fourth_data = atof(ticketPrice) * atof(numberOfTicketsSold);

    // Total Number of Tickets Sold
    float totalNumberOfTicketsSold = first_set + second_set + third_set + fourth_set;
    // Total Sale Amount
    float totalSaleAmount = first_data + second_data + third_data + fourth_data;
    cout << setprecision(2) << fixed << showpoint;
    cout << "Total Number Of Tickets Sold: " << totalNumberOfTicketsSold << endl;
    cout << "Total Sale Amount: " << totalSaleAmount << endl;
}