#include<fstream>
#include<iomanip>
#include<string>
#include<iostream>
using namespace std;
void claculateMonthlyCharges(string ID, int numOfText, bool &, double & );
int main() {
bool goodData=0;
string ID;
int numOfText;
double monthlyCharges = 0;
ifstream inFile;
ofstream outFile;
inFile.open("Temp.txt");
outFile.open("output.txt");
if (!inFile) {cout << "can not open the file\n";
system("pause");
return 0;}
outFile << "customer" << "\t" << "Messages" << "\t" << "Monthly Charges\n";
while(!inFile.eof()) {
inFile >> ID >> numOfText;
claculateMonthlyCharges(ID, numOfText, goodData, monthlyCharges);
if (goodData == false) {
outFile << ID << "\t\t" << numOfText << "\t\t" << "Bad data\n";}
else {outFile << fixed << showpoint << setprecision(2);
outFile << ID << "\t\t" << numOfText << "\t\t" << monthlyCharges << endl;}}
inFile.close();
outFile.close();
system("pause");
return 0;}
void claculateMonthlyCharges(string ID, int numOfText,bool & goodData,double & monthlyCharges){
if (numOfText<0 || numOfText>300 ) {goodData = false;}
else {goodData = true;
double overSixtyCharges;
if (numOfText <= 60) {
overSixtyCharges = 0;}
else {overSixtyCharges = (numOfText - 60)*0.05;}
int basic = 5;
double tax = (basic + overSixtyCharges)*0.12;
monthlyCharges = basic + overSixtyCharges + tax;}}
/*
customer    Messages    Monthly Charges
AAA     45      5.60
BBB     200     13.44
CCC     -10     Bad data
DDD     0       5.60
*/