C++ code works, but seems very inefficient

I'm currently leaing C++ and got my code to do everything I want it to but it seems as if the code is not very efficient because I basically doubled the code from my output console so it shows up in a text file. If you can, could you explain what I am doing wrong and what would you suggest I do in order to make the code more efficient. (Also column one needs to be left justify and column two has to be right justify in both console and text file which I believe I did correctly.)

/*  Description: This program calculates and prints the monthly paycheck for an employee (Output in command prompt and .txt file).*/

#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>

using namespace std;


char name[256];
double gross;
double fiTax;
double sTax;
double ssTax;
double mediTax;
double pPlan;
double hInsurance;
double tax;
double total;


int main()

{






    std::cout << "Please enter your name: ";
    std::cin.getline(name, 256);


    cout << "Please enter your gross amount: ";
    cin >> gross;



    std::cout << std::fixed;

    std::cout << std::setprecision(2);

    fiTax = gross * .15;
    sTax = gross * .035;
    ssTax = gross * .0575;
    mediTax = gross * .0275;
    pPlan = gross * .05;
    hInsurance = 75;

    tax = fiTax + sTax + ssTax + mediTax + pPlan + hInsurance;

    total = gross - tax;

    system("cls");


    ofstream file;
    file << std::fixed << std::setprecision(2);
    file.open("report.txt");





    cout << left<< setw(28) << name << endl;
    file << left << setw(28) << name << endl;



    cout << left << setw(28) << "Gross Amount: ............ $";
    cout << right << setw(7) << gross << endl;

    file << left << setw(28) << "Gross Amount: ............ $";
    file << right << setw(7) << gross << endl;




    cout << left << setw(28) << "Federal Tax: ............. $";
    cout << right << setw(7) << fiTax << endl;

    file << left << setw(28) << "Federal Tax: ............. $";
    file << right << setw(7) << fiTax << endl;





    cout << left << setw(28) << "State Tax: ............... $";
    cout << right << setw(7) << sTax << endl;

    file << left << setw(28) << "State Tax: ............... $";
    file << right << setw(7) << sTax << endl;






    cout << left << setw(28) << "Social Security Tax: ..... $";
    cout << right << setw(7) << ssTax << endl;

    file << left << setw(28) << "Social Security Tax: ..... $";
    file << right << setw(7) << ssTax << endl;








    cout << left << setw(28) << "Medicare/medicaid Tax: ... $";
    cout << right << setw(7) << mediTax << endl;

    file << left << setw(28) << "Medicare/medicaid Tax: ... $";
    file << right << setw(7) << mediTax << endl;









    cout << left << setw(28) << "Pension Plan: ............ $";
    cout << right << setw(7) << pPlan << endl;

    file << left << setw(28) << "Pension Plan: ............ $";
    file << right << setw(7) << pPlan << endl;









    cout << left << setw(28) << "Health Insurance: ........ $";
    cout << right << setw(7) << hInsurance << endl;

    file << left << setw(28) << "Health Insurance: ........ $";
    file << right << setw(7) << hInsurance << endl;








    cout << left << setw(28) << "Net Pay: ................. $";
    cout << right << setw(7) << total << endl;


    file << left << setw(28) << "Net Pay: ................. $";
    file << right << setw(7) << total << endl;



    file.close();


    retu 0;
}