What does Karel's code contain if it has a syntax error?

When Karel's code contains a syntax error, the code fails to meet the grammatical rules and structure required by the programming language. Syntax errors prevent the program from being correctly compiled or interpreted. As a result, Karel will not be able to run the code at all. This means any instructions or commands within the program have not been processed, and Karel will simply indicate that there is an error, halting execution entirely.

In contrast, if the code were to run correctly or if Karel skipped parts of the code, it would imply that the program was functioning as intended, which is not the case when syntax errors are present. Thus, the presence of such errors leads to a complete inability to execute the program.