C++ codes

Hello World

//hello.cpp: display a message on the screen 
#include <iostream>
 
int main()
{
   std::cout << "Hello, C++ world!\n";
   return 0;
}

• Text after are comments.
• can use C style comments.
• can use C functions.
• #include <iostream> to load the header file.
• There are many header files in the standard C++ library.[1]
• Program always begins with main() function.
• main() returns a integer.

Compile with GNU C++

g++ hello.cpp

Compile with Intel C++

icpc hello.cpp

Links for tutorial

• ​C++ Language Tutorial
• ​wikibooks

Examples of Job Script

​See Examples

Parallel C++

• OpenMP examples in C++
• MPI examples in C++

Useful Libraries for Scientific Computing

​deal.II - A Finite Element Differential Equations Analysis Library, ​tutorial