Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppStdSet_differenceExample1/CppStdSet_differenceExample1.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

./CppStdSet_differenceExample1/main.cpp


#include <algorithm>

#include <cassert>

#include <iostream>

#include <iterator>

#include <vector>



#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Weffc++"

#pragma GCC diagnostic ignored "-Wunused-local-typedefs"

#pragma GCC diagnostic ignored "-Wunused-variable"

#pragma GCC diagnostic pop



int main()

{

  //v contains all values from zero to ten

  const std::vector<int> v { 0,1,2,3,4,5,6,7,8,9 };



  //w contains all squares from 1 to an including 25

  std::vector<int> w { 1,4,9,16,25 };



  assert(std::is_sorted(v.begin(),v.end())

    && "std::set_difference expects a sorted container");

  assert(std::is_sorted(w.begin(),w.end())

    && "std::set_difference expects a sorted container");



  //x is the difference of v and w:

  //that is, the elements in v, that are

  //not in w

  std::vector<int> x;



  std::set_difference(v.begin(),v.end(),w.begin(),w.end(),

    std::back_inserter(x));



  //so x contains all non-squares between zero to ten

  assert(x.size() == 7);

  assert(x[0] == 0);

  assert(x[1] == 2);

  assert(x[2] == 3);

  assert(x[3] == 5);

  assert(x[4] == 6);

  assert(x[5] == 7);

  assert(x[6] == 8);



  //Show x on screen

  std::copy(x.begin(),x.end(),std::ostream_iterator<int>(std::cout," "));

  std::cout << '\n';

}



/* Screen output



0 2 3 5 6 7 8



*/

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(C++) StdSet_differenceExample1

Technical facts

Qt project file: ./CppStdSet_differenceExample1/CppStdSet_differenceExample1.pro

./CppStdSet_differenceExample1/main.cpp