How will you identify code with runtime errors?

To identify code with runtime errors, I would utilize debugging tools and techniques such as breakpoints and step-through debugging to monitor variable states and program flow. Additionally, I would analyze error messages and stack traces generated during execution to pinpoint the source of the error. Implementing thorough logging can also help track down issues by providing insights into the program's behavior at runtime. Lastly, writing and running unit tests can help catch potential runtime errors before deployment.