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(C++) BoostFormatExample1

 

BoostQt CreatorLubuntu

 

Boost.Format example 1 is a Boost.Format example.

 

Technical facts

 

Operating system(s) or programming environment(s)

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C++ standard:

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Qt project file: ./CppBoostFormatExample1/CppBoostFormatExample1.pro

 

include(../../ConsoleApplication.pri) #Or use the code below
# QT += core
# QT += gui
# greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
# CONFIG   += console
# CONFIG   -= app_bundle
# TEMPLATE = app
# CONFIG(release, debug|release) {
#   DEFINES += NDEBUG NTRACE_BILDERBIKKEL
# }
# QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++
# unix {
#   QMAKE_CXXFLAGS += -Werror
# }

include(../../Libraries/Boost.pri) #Or use the code below
# win32 {
#   INCLUDEPATH += \
#     ../../Libraries/boost_1_54_0
# }

SOURCES += main.cpp

 

 

 

 

 

./CppBoostFormatExample1/main.cpp

 

#include <cstdio>
#include <iostream>

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#include <boost/format.hpp>
#pragma GCC diagnostic pop

int main()
{
  //Display integers, default
  std::cout << boost::format("%1%\n") % 1;
  std::cout << boost::format("%1%\n") % 12;
  std::cout << boost::format("%1%\n") % 123;
  std::cout << boost::format("%1%\n") % 1234;
  std::cout << boost::format("%1%\n") % 12345;
  std::cout << boost::format("%1%\n") % 123456;

  //Display doubles, default
  std::cout << boost::format("%1%\n") % 1.2345678;
  std::cout << boost::format("%1%\n") % 12.345678;
  std::cout << boost::format("%1%\n") % 123.45678;
  std::cout << boost::format("%1%\n") % 1234.5678;
  std::cout << boost::format("%1%\n") % 12345.678;
  std::cout << boost::format("%1%\n") % 123456.78;

  //Display doubles with two significant digits
  std::cout << boost::format("%1$.2d\n") % 1.2345678;
  std::cout << boost::format("%1$.2d\n") % 12.345678;
  std::cout << boost::format("%1$.2d\n") % 123.45678;
  std::cout << boost::format("%1$.2d\n") % 1234.5678;
  std::cout << boost::format("%1$.2d\n") % 12345.678;
  std::cout << boost::format("%1$.2d\n") % 123456.78;

  //Display sign
  //Pad to 5 digits
  std::cout << boost::format("%1$+5d\n") % 1;
  std::cout << boost::format("%1$+5d\n") % 12;
  std::cout << boost::format("%1$+5d\n") % 123;
  std::cout << boost::format("%1$+5d\n") % 1234;
  std::cout << boost::format("%1$+5d\n") % 12345;
  std::cout << boost::format("%1$+5d\n") % 123456;
}

/* Screen output

1
12
123
1234
12345
123456
1.23457
12.3457
123.457
1234.57
12345.7
123457
1.2
12
1.2e+002
1.2e+003
1.2e+004
1.2e+005
   +1
  +12
+123
+1234
+12345
+123456

*/

 

 

 

 

 

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