Front page > Programming > Is Defining a Zero-Length Array in C/C++ Valid and What are the Implications?
Is Defining a Zero-Length Array in C/C++ Valid and What are the Implications?
Posted on 2025-03-22
Browse:304
Implications of Defining a Zero-Length Array in C/C
Despite the lack of compiler errors in GCC, defining an array of size zero (e.g., int array[0];) is invalid in both C and C . According to ISO 9899:2011 6.7.6.2, the expression representing the array size must be a constant expression with a value greater than zero.
The absence of a warning in GCC may stem from its support for legacy code that used arrays without the [] syntax. However, it's crucial to understand that such arrays are not optimized out.
In C , a zero-length array, also known as an empty array, exists but has no elements. It can be useful in certain situations, such as tail-padding structures for alignment purposes. However, in general, it's not recommended to declare arrays with zero length, as it can lead to undefined behavior and errors.
Latest tutorial
More>
-
How to Dynamically Create Cross-Tabulated Tables in MySQL?MySQL Dynamic Cross TabProblem:You have a table containing data with multiple dimensions, and you want to create a cross-tabulated table (pivot table)...Programming Posted on 2025-03-22 -
JUnit Testing: A Comprehensive Guide to Unit Testing in JavaJUnit testing is a widely used testing framework for Java that simplifies the process of unit testing by providing robust tools and features. This ar...Programming Posted on 2025-03-22
-
NULL vs. 0 in C++: Which is the Better Null Pointer?Pointers in C : NULL vs. 0In the annals of C programming, the debate rages on: Should you use NULL or 0 (zero) for null pointers? While some progra...Programming Posted on 2025-03-22
-
How to Perform a Deep Merge of Nested Dictionaries in Python?Deep Merge of Dictionaries of Dictionaries in PythonMerging multiple dictionaries with nested keys can be a challenging task. Let's consider the f...Programming Posted on 2025-03-22
-
How Can I Iterate Over a Range of Dates in PHP Using `foreach`?Iterating Over Dates Using foreach in PHPGenerating a series of dates can be useful in various scenarios. From creating a calendar to generating a seq...Programming Posted on 2025-03-22
-
Transitioning from React.js to React NativeIntroduction As a frontend developer with experience in React.js, expanding your skill set to include React Native can open up exciting oppor...Programming Posted on 2025-03-22
-
How Does GROUP BY x, y Granularly Group Data in SQL?Deeply understand the GROUP BY x, y statement in SQL ] GROUP BY x statement in SQL is used to group records based on the common value of the specifi...Programming Posted on 2025-03-22
-
How Can I Efficiently Read a Large File in Reverse Order Using Python?Reading a File in Reverse Order in PythonIf you're working with a large file and need to read its contents from the last line to the first, Python...Programming Posted on 2025-03-22
-
Should You Use "0" or "0px" for Zero Values in CSS?0 or 0px in CSS: Unit Specificity for Zero ValuesIn CSS, it is common to encounter the use of both "property: 0" and "property: 0px&quo...Programming Posted on 2025-03-22
-
Why is my PHP `preg_replace()` function throwing an "Unknown Modifier" error?preg_replace(): Unknown Modifier - Diagnosis and ResolutionWhen encountering the error message "Warning: preg_replace(): Unknown modifier [charac...Programming Posted on 2025-03-22
-
How to Convert Integers to Hexadecimal Strings in C++?Converting Integers to Hexadecimal Strings in C In C , converting an integer to a hexadecimal string can be achieved using the header's std::he...Programming Posted on 2025-03-22
-
Why Isn\'t My CSS Background Image Appearing?Troubleshoot: CSS Background Image Not AppearingYou've encountered an issue where your background image fails to load despite following tutorial i...Programming Posted on 2025-03-22
-
Why Are Scrollbars Missing on My iPad Website in iOS?iOS Scrollbar Frustrations: Troubleshooting Overflow CSSDeveloping for an iPad website, you stumbled upon an unexpected issue: CSS overflow properties...Programming Posted on 2025-03-22
-
How to upload files with additional parameters using java.net.URLConnection and multipart/form-data encoding?Uploading Files with HTTP RequestsTo upload files to an HTTP server while also submitting additional parameters, java.net.URLConnection and multipart/...Programming Posted on 2025-03-22
-
How Can I Prevent Font Loading Delays in Web Rendering?How to Mitigate Font Loading Delay in Web RenderingEver noticed the text on a web page momentarily appearing in the default system font before switchi...Programming Posted on 2025-03-22
Study Chinese
- 1 How do you say "walk" in Chinese? 走路 Chinese pronunciation, 走路 Chinese learning
- 2 How do you say "take a plane" in Chinese? 坐飞机 Chinese pronunciation, 坐飞机 Chinese learning
- 3 How do you say "take a train" in Chinese? 坐火车 Chinese pronunciation, 坐火车 Chinese learning
- 4 How do you say "take a bus" in Chinese? 坐车 Chinese pronunciation, 坐车 Chinese learning
- 5 How to say drive in Chinese? 开车 Chinese pronunciation, 开车 Chinese learning
- 6 How do you say swimming in Chinese? 游泳 Chinese pronunciation, 游泳 Chinese learning
- 7 How do you say ride a bicycle in Chinese? 骑自行车 Chinese pronunciation, 骑自行车 Chinese learning
- 8 How do you say hello in Chinese? 你好Chinese pronunciation, 你好Chinese learning
- 9 How do you say thank you in Chinese? 谢谢Chinese pronunciation, 谢谢Chinese learning
- 10 How to say goodbye in Chinese? 再见Chinese pronunciation, 再见Chinese learning
