Runtime error handling in Compiler Design - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Runtime Error Handling Mechanisms

Which of the following best describes the primary purpose of runtime error handling in a compiler?

A To optimize the program's performance by removing redundant code before execution.

B To detect and report errors that occur during program execution, allowing the program to handle or recover from them.

C To translate high-level code into machine code without checking for errors.

D To check syntax errors before the program runs.

💡 Hint

Think about what happens when a program runs and encounters unexpected situations.

Runtime error handling is designed to detect errors that occur while the program is running, such as division by zero or invalid memory access, and to allow the program to respond appropriately.

📋 Factual

intermediate

Common Types of Runtime Errors

Which of the following is NOT typically considered a runtime error?

A Null pointer dereference

B Array index out of bounds

C Syntax error in source code

D Division by zero

💡 Hint

Consider when each error type is detected: before running or during running.

Syntax errors are detected during compilation or parsing, before the program runs. Runtime errors occur during execution.

🚀 Application

advanced

Effect of Runtime Error Handling on Program Execution

Consider a program that divides two numbers input by the user. If the divisor is zero, a runtime error occurs. Which runtime error handling strategy allows the program to continue running after the error?

A Catch the error and provide an alternative computation or message, then continue execution.

B Log the error silently and halt the program after finishing all computations.

C Ignore the error and proceed without any checks.

D Terminate the program immediately upon error detection.

💡 Hint

Think about how programs can recover from errors without stopping.

Catching runtime errors and handling them allows the program to respond gracefully and continue running, improving user experience and reliability.

🔍 Analysis

advanced

Analyzing Runtime Error Handling Impact on Performance

Which statement correctly explains the trade-off involved in implementing runtime error handling in a compiler or runtime environment?

A Runtime error handling can slow down program execution due to additional checks but increases program safety.

B Runtime error handling always improves performance by preventing errors.

C Runtime error handling removes the need for any compile-time checks.

D Runtime error handling eliminates all possible errors before the program runs.

💡 Hint

Consider the cost of checking for errors while the program runs.

Adding runtime checks can reduce speed because the program must verify conditions during execution, but it helps catch errors that static analysis cannot detect.

❓ Reasoning

expert

Determining the Outcome of Unhandled Runtime Errors

What is the most likely outcome if a runtime error occurs in a program but there is no error handling mechanism in place?

A The program will ignore the error and produce incorrect results silently.

B The program will automatically fix the error and continue running.

C The program will pause and wait for user input to resolve the error.

D The program will crash or terminate unexpectedly, possibly causing data loss.

💡 Hint

Think about what happens when errors are not caught during execution.

Without error handling, runtime errors typically cause the program to stop abruptly, which can lead to crashes and loss of unsaved data.