Question

Write a C++ program to determine the cost of cell phone bill.

Answer 1

NOTE: I have completed the program for your assignment. Please check and let me know if you have any questions. I will acknowledge back with a response within 24 hours. Thanks for your patience.

The file CustomersA.txt you have given is a screenshot and i was not able to copy the contents. So i have picked the first three lines as a sample and tested the program. You create the original CustomersA.txt file and test the program.

Code:

#include <iostream>

#include <fstream>

using namespace std;

// function declaration

double calculateCost(int, int, int, int);

int main()

{

// file and variable declaration

ifstream infile("CustomersA.txt");

int lines, mins, texts, gb;

double cost;

// reading each line from file

if (infile.is_open()){

while(infile >> lines >> mins >> texts >> gb){

// passing the attributes to calculateCost to determine the total cost customer has to pay

cost = calculateCost(lines, mins, texts, gb);

cout << "Customer has to pay: " << cost << endl;

}

}

else

cout << "Some issue while file opening, plese check..." << endl;

cout << endl;

return 0;

}

double calculateCost(int lines, int mins, int texts, int gb)

{

double total_cost;

total_cost = 6 * lines; // line cost

total_cost += 0.02 * mins; // calls

total_cost += 0.25 * texts; // message cost

total_cost += 10 * gb; // Data cost

return total_cost;

}

Codee output screenshot:

sh-4.4$ cat CustomersA.txt 1 1362 1134 1 3 815 495 4 1 1137 606 3 sh-4.4$ g++ prog.cpp sh-4.4$ ./a.out Customer has to pay: 326.74 Customer has to pay: 198.05 Customer has to pay: 210.24 sh-4.4$