This gives error & doesn't work:
g++ test.cpp -o test then ./test
This works according to Gemini:
E.g. When in root of directory:
g++ test.cpp -o test && ./test
E.g. When in c1m1_0_test folder:
g++ c1m1_0_test/test.cpp -o c1m1_0_test/test && ./c1m1_0_test/test