Make sure your terminal is in the correct directory that contains your C++ source files. Use the ls command to check what files are available:

You can build your program in several different ways:

Command	Effect
g++ FILENAME.cpp	Builds just one C++ file into a.out or a.exe
g++ FILENAME.cpp -o program.exe	Builds just one C++ file into a program named program.exe
g++ *.cpp *.h	Build all .cpp and .h source files into a.out or a.exe
g++ *.cpp *.h -o program.exe	Build all .cpp and .h source files into program.exe