To get a very simple program in C++, you'll first need to set it up and then create programs for it. The following steps list how to get started in C++ using a very simple program.Get a C++ CompilerThis is the first step you'd want to do before starting learning to program in C++. There are good free C++ compilers available for all major OS platforms. Download one that suits your platform or you can use the tutorialspoint.com's online compiler on https://www.tutorialspoint.com/compile_cpp_online.phpGCC − GCC is the GNU Compiler chain that is basically a collection of a bunch of different compilers ... Read More

So you've decided to learn how to program in C++ but don't know where to start. Here's a brief overview of how you can get started.Get a C++ CompilerThis is the first step you'd want to do before starting learning to program in C++. There are good free C++ compilers available for all major OS platforms. Download one that suits your platform or you can use the tutorialspoint.com's online compiler on https://www.tutorialspoint.com/compile_cpp_online.phpGCC − GCC is the GNU Compiler chain that is basically a collection of a bunch of different compilers created by GNU. You can download and install this compiler ... Read More

C++ is a widely used programming language that is used for writing large-scale commercial applications for end-users. Some of the major applications built using C++ by major software vendors and giants are −Google − Google file system, Google Chromium browser, and MapReduce large cluster data processing are all written in C++.Mozilla − Mozilla Firefox and Thunderbird email chat client are both written using C++.MySQL − MySQL, an open source DBMS is written using C++.Microsoft − Many windows apps that you regularly use are written in C++.Rockstar Games − Almost all major game companies use C++ due to its sheer speed ... Read More

Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which may contain data, in the form of fields, often known as attributes; and code, in the form of procedures, often known as methods. For example, a person is an object which has certain properties such as height, gender, age, etc. It also has certain methods such as move, talk, and so on.ObjectThis is the basic unit of object-oriented programming. That is both data and function that operate on data are bundled as a unit called an object.ClassWhen you define a class, you define a blueprint for ... Read More

C++ is a programming language developed by Bjarne Stroustrup in 1979 at Bell Labs. C++ is regarded as a middle-level language, as it comprises a combination of both high-level and low-level language features. It is a superset of C, and that virtually any legal C program is a legal C++ program. C++ runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX.It is a language that is − Statically typed − A programming language is claimed to use static typing when type checking is performed during compile-time as opposed to run-time. Compiled − A compiled ... Read More

Following are the steps to use native methods.Create a header file (.h file) for a CPP program.Create CPP fileCreate a DLLIn java code, declare the method as native, load the DLL using System.loadLibrary() method and call the method.

To wrap existing C or C++ functionality in Python, there are number of options available, which are: Manual wrapping using PyMethodDef and Py_InitModule, SWIG, Pyrex, ctypes, SIP, Boost.Python, and pybind1. Using the SWIG Module Let’s take a C function and then tune it to python using SWIG. The SWIG stands for “Simple Wrapper Interface Generator”, and it is capable of wrapping C in a large variety of languages like python, PHP, TCL etc. Example Consider simple factorial function fact() in example.c file. /* File : example.c */ #include // calculate factorial int fact(int n) ... Read More

Here is an example in which a simple Python object is wrapped and embedded. We are using  .c for this, c++ has similar steps −class PyClass(object):     def __init__(self):         self.data = []     def add(self, val):         self.data.append(val)     def __str__(self):         return "Data: " + str(self.data) cdef public object createPyClass():     return PyClass() cdef public void addData(object p, int val):     p.add(val) cdef public char* printCls(object p):     return bytes(str(p), encoding = 'utf-8')We compile with cython pycls.pyx (use --cplus for c++) to generate ... Read More

Having entered following command from linux terminal −$ g++ helloworld.cppThe a.out file should be created in the current working directory if the compilation is successful. Check if a.out is created.To execute enter following from command line −$ ./a.outIn most cases, output of your source program is displayed. However, as in your case, error message indicating a.out is not executable is appearing. See the properties of a.out and make it executable (if not already) by following command −$ chmod +x a.outYou may require sudo privilege for this. In all probability this should work. all the bestRead More

Calling a JavaScript function directly from C++ depends on the environment and the system; for this, make sure you have embedded a JavaScript engine or integrated C++ with JavaScript. In this article, we will be using Emscripten (C++ to JavaScript in WebAssembly) to call a JavaScript function from C++. For this, you have to compile the C++ program to WebAssembly using Emscripten and then call JavaScript functions from C++. So, first, create the C++ file with the header . C++ File Let's consider that this file name is saved as main.cpp. #include // here declared an external JS ... Read More