Technical facts

Application type(s)

Desktop application

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

GUI application

C++ standard:

C++11

Compiler(s):

G++ 4.9.2

Libraries used:

Qt: version 5.4.1 (32 bit)
STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppStdFgetsExample1/CppStdFgetsExample1.pro


exists(../../ConsoleApplication.pri) {

  include(../../ConsoleApplication.pri)

}

!exists(../../ConsoleApplication.pri) {

  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

  }

}



SOURCES += main.cpp

./CppStdFgetsExample1/main.cpp


//Example adapted from en.cppreference.com/w/cpp/io/c/fgets



#include <cstdio>

#include <cstdlib>

#include <iostream>



int main()

{

  std::FILE* const file = std::tmpfile();



  std::fputs("Alan Turing\n", file);

  std::fputs("John von Neumann\n", file);

  std::fputs("Alonzo Church\n", file);



  std::rewind(file);



  const int buffer_size = 8;

  char buffer[buffer_size];

  while (std::fgets(buffer, buffer_size, file) != NULL)

  {

    std::cout << "<before>" << buffer << "<after>" << '\n';

  }

}



/* Screen output



<before>Alan Tu<after>

<before>ring

<after>

<before>John vo<after>

<before>n Neuma<after>

<before>nn

<after>

<before>Alonzo <after>

<before>Church

<after>

Press <RETURN> to close this window...



*/

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(C++) StdFgetsExample1

Technical facts

Qt project file: ./CppStdFgetsExample1/CppStdFgetsExample1.pro

./CppStdFgetsExample1/main.cpp