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C4droid is a user-friendly (but powerful)C/C++IDE + C/C++ compiler for Android.Basic features:- Offline C compiler: create your own applications on Androiddeviceand run them even without Internet access- Source code editor with syntax highlighting, tabs,codecompletion, code formatting, file association andundo/redo- Export&share your programs as APKs or native executables(forterminal apps)- No root required (but C4droid can use it for your programs ifyouwant)- Full ANSI C and ISO C99 support with TCC (Tiny C Compiler)+uClibc- Git integration- Customizable GUI, choose where to place tabs and buttonsbyyourself, themes are also supported.More features with a free GCC plugin:- Fully-functional C++ compiler, almost complete C++11 supportwithGCC compiler- NativeActivity, Qt, SDL and SDL2 support for GUI- Debugger with breakpoints and watches- Makefile support: use the same build scripts as on yourPC(BusyBox is included)- Semi-automatic open-source library porting feature forenhancedprogramming & educationC4droid is designed to be user-friendy out-of-the-box, butnothingis perfect, so here are some answers for questions thatcanappear:How to install C++ support?C4droid will ask you to install C++ support at first startupandwill configure itself in semi-automatic mode.If you want to do that manually, you need:0) Enough internal memory OR root rights. C4droid does notrequireroot rights for devices with more than 50MB of freeinternalmemory.1) Install GCC plugin (C4droid will ask you to install it).2) Select G++ compiler in C4droid preferences.3*) Add "using namespace std;" to your program(before int main),useiostream, not iostream.hNote that if you want to use C4droid as a C compiler, it isbetterto select GCC, not G++.How to use SDL, SDL2, NativeActivity and Qt insingle-filemode?Just install SDL plugin and select G++ compiler inC4droidpreferences.Note that C4droid chooses app mode using a very simple sourcecodeanalysis:SDL is detected with #include "SDL.h", SDL2 is detectedwith#include "SDL2/SDL.h", NativeActivity is detected with#include"android_native_app_glue.h", Qt is detected with#include"QApplication"If you are compiling a single-file Qt app, you must add#include"yoursourcefilenamewithcpp.moc" to the end of source codefilealso.How to use Makefiles, multifile projects, etc?Long-click compile button (or select "compilation settings"ifbuttons are hidden/moved) and configure current directory tousethe mode you want.Note that C4droid will create .c4droid configuration file whenyouwill press Ok. Some modes (like makefile) require to enterresultexecutable file name, don't forget to do that.After doing that all use compile and run buttons to build andrunyour app as regular.How to build and install libraries?Almost the same way as regular Makefile building except forthatmost probably some patching may be required.Currently tested libraries are gmp(internalmemoryonly),mpfr,mpc,libxml2,neon,sqlite,SDL_gfx(--disable-mmxrequired).Which gestures/keyboard shortcuts does C4droid support?Long-click gestures:New button: delete current file.Save button: save as.Open button: recent files.Run button: run with arguments.Compile button: configure current directory.Tab: close tab.Keyboard shortcuts:Ctrl-C, Ctrl-V, Ctrl-X for Copy, Paste and CutCtrl-S, Ctrl-O for Save/OpenCtrl-Z, Ctrl-Y for Undo/Redo.Ctrl-L for "go to Line"Ctrl-F for FindCtrl-A for select AllCtrl-B for Build/compileCtrl-R for RunCtrl-Space/Ctrl-D for autocompletion (Ctrl-Space may be reservedbyAndroid)Report bugs at n0n3m4@gmail.com.C4droid stands for "c for android" (or "c++ for android").C4droid is not an online compiler, so it uses real binaries.Some binaries in APK are licensed under (L)GPL, email me forthesource code (Tiny C compiler, GCC, BusyBox, etc.)Android is a trademark of Google Inc.Qt is a registered trademark of Digia.

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- Test your JavaScript skills and knowledge with our extensivebaseof programming tests and questions - Learn and improveyourJavaScript skills and knowledge by reading explanationsassigned toeach programming question to help you understand theconcept -extend your programming knowledge by reading our articlesaboutJavaScript topics - save your favorite JavaScript tests toyourfavorite list - Create your own JavaScript quizzes withtechnicalquestions that are in our database - become an author andadd yourown JavaScript questions and tests and help other toimprove theircoding skills Quizes and questions are divided by thelevel:beginner, intermediate and advanced. This application doesnotcontain official JavaScript tests, but it will definitely helpyouprepare for technical interview and get your dream position ofaJavaScript developer. Whether you are an experienced orbeginnersoftware programmer, this application is for everyone whowants tolearn and expand their knowledge of the JavaScriptprogramminglanguage. This application can be useful to: - preparefor theJavaScript programming exam - fill knowledge gaps aboutJavaScriptlanguage - prepare for the JavaScript technical jobinterview -practice your JavaScript coding skills Join 13,000 userswho arealready learning the JavaScript programming language withus. Youcan find programming questions related to: - JavaScript-ECMAScript 6 (ECMAScript 2015) - CSS - HTML - React - Angular-AngularJS - TypeScript - Node - MongoDB - Git - Java - PHPExamplesubjects: - JavaScript - variables and data types,operator,conditions and loops, arrays, functions, objects, scope,this,hoisting, arguments, NaN, regular expressions, null,undefined,closure, apply/call/bind, new and prototype, iife, strictandnon-strict mode, delete operator, type of operator,WebSockets,Fetch API, cookies, XHR and Ajax, session and localstorage, asyncand await - ES6 - promises, let/const, templatestrings, arrowfunction, rest and spread, classes and inheritance,modules,default parameter values, symbol, generators,array/objectdestructuring, Set, Map - CSS - selectors, specificity,pseudoclasses and pseudo elements, box model, shorthandproperties,stacking context, margin collapsing, floating,positioning, units,gradients, block vs inline elements, fontstyling, inheritance -HTML - links, lists, elements, tables, forms,images, audio andvideo tag, iframes, global attributes, doctype andDTD - TypeScript- enums, types, interfaces, classes, generics,union, tuple -Angular - binding, components, directives, pipes,modules,template-driven forms and reactive forms, Angular CLI,services,routing, @Input/@Output, guards, lifecycle hooks - React-components and props, JSX, handling events, state, Refs - Node-modules, fs, http, npm

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