| // ---------------------------------------------------------------------------- |
| // sample_new_features.cpp : demonstrate features added to printf's syntax |
| // ---------------------------------------------------------------------------- |
| |
| // Copyright Samuel Krempp 2003. Use, modification, and distribution are |
| // subject to the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| // See http://www.boost.org/libs/format for library home page |
| |
| // ---------------------------------------------------------------------------- |
| |
| #include <iostream> |
| #include <iomanip> |
| |
| #include "boost/format.hpp" |
| |
| int main(){ |
| using namespace std; |
| using boost::format; |
| using boost::io::group; |
| |
| // ------------------------------------------------------------------------ |
| // Simple style of reordering : |
| cout << format("%1% %2% %3% %2% %1% \n") % "o" % "oo" % "O"; |
| // prints "o oo O oo o \n" |
| |
| |
| // ------------------------------------------------------------------------ |
| // Centered alignment : flag '=' |
| cout << format("_%|=6|_") % 1 << endl; |
| // prints "_ 1 _" : 3 spaces are padded before, and 2 after. |
| |
| |
| |
| // ------------------------------------------------------------------------ |
| // Tabulations : "%|Nt|" => tabulation of N spaces. |
| // "%|NTf|" => tabulation of N times the character <f>. |
| // are useful when printing lines with several fields whose width can vary a lot |
| // but we'd like to print some fields at the same place when possible : |
| vector<string> names(1, "Marc-François Michel"), |
| surname(1,"Durand"), |
| tel(1, "+33 (0) 123 456 789"); |
| |
| names.push_back("Jean"); |
| surname.push_back("de Lattre de Tassigny"); |
| tel.push_back("+33 (0) 987 654 321"); |
| |
| for(unsigned int i=0; i<names.size(); ++i) |
| cout << format("%1%, %2%, %|40t|%3%\n") % names[i] % surname[i] % tel[i]; |
| |
| /* prints : |
| |
| |
| Marc-François Michel, Durand, +33 (0) 123 456 789 |
| Jean, de Lattre de Tassigny, +33 (0) 987 654 321 |
| |
| |
| the same using width on each field lead to unnecessary too long lines, |
| while 'Tabulations' insure a lower bound on the *sum* of widths, |
| and that's often what we really want. |
| */ |
| |
| |
| |
| cerr << "\n\nEverything went OK, exiting. \n"; |
| return 0; |
| } |