Class 6 Exam > Class 6 Questions > Use_______to determine the null-terminated me...
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Use_______to determine the null-terminated message string that corresponds to the error code errcode.
- a)strerror()
- b)strstr()
- c)strxfrm()
- d)memset()
Correct answer is option 'A'. Can you explain this answer?
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Use_______to determine the null-terminated message string that corresp...
Use strerror (errcode) to determine the null-terminated message string that corresponds to the error code errcode.
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Use_______to determine the null-terminated message string that corresp...
Understanding the Correct Answer: strerror()
To determine the null-terminated message string that corresponds to an error code, the function you should use is `strerror()`. Here's why:
What is strerror()?
- `strerror()` is a standard C library function.
- It takes an error code (usually of type `int`) as an argument.
- The function returns a pointer to the string that describes the error code passed to it.
Why is it the Correct Choice?
- The primary purpose of `strerror()` is to convert error codes into human-readable strings.
- This is particularly useful for debugging or logging, as it provides meaningful error descriptions.
Other Options Explained
- strstr()
- This function is used for finding a substring within a string.
- It does not relate to error codes or messages.
- strxfrm()
- This function is used for transforming strings based on locale.
- It is not applicable for retrieving error messages.
- memset()
- This function is used to set a block of memory to a specific value.
- It does not relate to strings or error handling.
Conclusion
Using `strerror()` is essential for effectively converting error codes to descriptive strings, making it the correct answer for identifying error messages in programming.
To determine the null-terminated message string that corresponds to an error code, the function you should use is `strerror()`. Here's why:
What is strerror()?
- `strerror()` is a standard C library function.
- It takes an error code (usually of type `int`) as an argument.
- The function returns a pointer to the string that describes the error code passed to it.
Why is it the Correct Choice?
- The primary purpose of `strerror()` is to convert error codes into human-readable strings.
- This is particularly useful for debugging or logging, as it provides meaningful error descriptions.
Other Options Explained
- strstr()
- This function is used for finding a substring within a string.
- It does not relate to error codes or messages.
- strxfrm()
- This function is used for transforming strings based on locale.
- It is not applicable for retrieving error messages.
- memset()
- This function is used to set a block of memory to a specific value.
- It does not relate to strings or error handling.
Conclusion
Using `strerror()` is essential for effectively converting error codes to descriptive strings, making it the correct answer for identifying error messages in programming.
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