Formatting with iostreams

main.cpp

#include <iostream>
#include <string>
#include <array>
#include <iomanip>
#include <numeric>

using namespace std;

struct Item
{
  unsigned sku;
  string name;
  unsigned qty;
  double price;
  
  double total() const { return this->qty * this->price; }
};

array<Item, 6> items = {{
  {271016086, "Pencil", 10, .8},
  {500598995, "Eraser", 3, 2.},
  {926084379, "Calculator", 1, 11.99},
  {707202821, "Laptop Computer", 1, 1416.75},
  {55492254, "Laptop Bag", 1, 150.},
  {4447, "$25 Discount", 3, -25.}
}};

int main()
{
  cout << "SKU        Item                 Qty   Price   Total\n"
          "---------------------------------------------------" << endl;
  
  for (Item item : items)
  {
    // SKU
    cout << setw(10) << right << setfill('0') << item.sku << ' ';
    
    // Name
    cout << setw(20) << left << setfill(' ') << item.name << ' ';
    
    // Qty
    cout << setw(3) << right << item.qty << ' ';
    
    // Price
    cout << setw(7) << internal << setprecision(2) << fixed << item.price << ' ';
    
    // Total
    cout << setw(7) << item.total() << endl;
  }
  
  double total = accumulate(begin(items), end(items), 0.,
         [](double total, Item item) { return total + item.total(); });
  
  cout << "TOTAL: " << setw(44) << setfill('.') << right << total << endl;
}

output.txt

SKU        Item                 Qty   Price   Total
---------------------------------------------------
0271016086 Pencil                10    0.80    8.00
0500598995 Eraser                 3    2.00    6.00
0926084379 Calculator             1   11.99   11.99
0707202821 Laptop Computer        1 1416.75 1416.75
0055492254 Laptop Bag             1  150.00  150.00
0000004447 $25 Discount           3 - 25.00 - 75.00
TOTAL: .....................................1517.74