For the purpose of this tutorial, you were instructed to create a Standard Make C++ Project which requires you to create a makefile. Managed Make C/C++ projects generate makefiles for you.
To create your makefile:
all: hello.exe
clean:
rm main.o hello.exe
hello.exe: main.o
g++ -g -o hello main.o
main.o:
g++ -c -g main.cpp
Your new makefile, along with your main.cpp file are displayed in the C/C++ Projects view and in the Navigator view. Your project now contains main.cpp and makefile. You can now build your HelloWorld project.
Working with C/C++ project files
Writing code