If you comment out the "using namespace std;$"$ statement, which line of code with be marked wrong?

If you use ssh server, you may use vim to edit the $.$cpp file and comment out the line by adding $"//"$ at the start of the line. Use $"$:wq$"$ to save the file, and compile it again to check the error message.

If you use your local terminal, you may comment out the line by adding $"//"$ at the start of the line, save the file, and compile it again to check the error message.

What kind of error do you get?

procedural error

run$-$time error

syntax error

logic error