2.2.9. Example: Building a C++ program with the GCC (compiling and linking in one step)

Procedure

1. Create a directory hello-cpp:

   $ mkdir hello-cpp

2. Change to the created directory:

   $ cd hello-cpp

3. Create file hello.cpp with the following contents:

   #include <iostream>
   
   int main() {
     std::cout << "Hello, World!\n";
     return 0;
   }

4. Compile and link the code with g++:

   $ g++ hello.cpp -o helloworld

   This compiles the code, creates the object file hello.o, and links the executable file helloworld from the object file.

5. Run the resulting executable file:

   $ ./helloworld

   Hello, World!

6. Optional: Change back to the parent directory:

   $ cd ..

7. Optional: Remove the hello-cpp directory:

   $ rm -r hello-cpp