@LyuZhang

[Running] cd "/Users/lyutianyangzhang/Desktop/projects/helloworld/" && g++ h.cpp -o h && "/Users/lyutianyangzhang/Desktop/projects/helloworld/"h
Undefined symbols for architecture arm64:
  "_main", referenced from:
      <initial-undefines>
ld: symbol(s) not found for architecture arm64
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

[Done] exited with code=1 in 0.472 seconds. I get this error