When considering the behavior of the `printf()` function in C, it is important to understand how it handles errors. The `printf()` function is used to output formatted data to stdout. In terms of error handling, if the `printf()` function encounters a problem while writing to the output, it returns a negative value. This negative return indicates that an error occurred during execution.

Let’s evaluate the options provided:

1. **Positive value**: This is incorrect, as a successful execution returns a non-negative count of characters printed.
2. **Zero**: This is also incorrect, as zero means that nothing was printed, which does not indicate an error.
3. **Negative value**: This is the correct option, as it reflects an error situation.
4. **None of the mentioned**: This is incorrect because negative value is specifically mentioned.

### Final Answer
The correct answer is **Negative value**.

Question

When considering the behavior of the `printf()` function in C, it is important to understand how it handles errors. The `printf()` function is used to output formatted data to stdout. In terms of error handling, if the `printf()` function encounters a problem while writing to the output, it returns a negative value. This negative return indicates that an error occurred during execution.

Let’s evaluate the options provided:

1. **Positive value**: This is incorrect, as a successful execution returns a non-negative count of characters printed.
2. **Zero**: This is also incorrect, as zero means that nothing was printed, which does not indicate an error.
3. **Negative value**: This is the correct option, as it reflects an error situation.
4. **None of the mentioned**: This is incorrect because negative value is specifically mentioned.

### Final Answer
The correct answer is **Negative value**.

Knowee AI · Accepted Answer

When considering the behavior of the `printf()` function in C, it is important to understand how it handles errors. The `printf()` function is used to output formatted data to stdout. In terms of error handling, if the `printf()` function encounters a problem while writing to the output, it returns a negative value. This negative return indicates that an error occurred during execution.

Let’s evaluate the options provided:

1. **Positive value**: This is incorrect, as a successful execution returns a non-negative count of characters printed.
2. **Zero**: This is also incorrect, as zero means that nothing was printed, which does not indicate an error.
3. **Negative value**: This is the correct option, as it reflects an error situation.
4. **None of the mentioned**: This is incorrect because negative value is specifically mentioned.

### Final Answer
The correct answer is **Negative value**.

Test time left: 57:22BasicsThe printf() function returns which value when an error occurs?OptionsPositive valueZeroNegative valueNone of the mentioned

Question

Test time left: 57:22

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