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What Are The Data Types For Which It Is Not Possible To Create An Array?

In programming, arrays are like containers for storing data. However, not all types of data can be put into these containers. Some data types are too complex or change in size, and for them, we can’t use arrays. This article will explain which types these are and why. Understanding this helps us use the right tools in our programming work.

1. Arrays of void: The C standard doesn’t allow you to create arrays of type void because the size of elements in an array needs to be known at compile time. Since void represents an incomplete or unknown data type, you can’t create an array with void elements.
2. Arrays of functions: While you can have arrays of function pointers, you cannot have arrays of function types themselves. In C, function types are not first-class types that you can create arrays of directly. However, you can create an array of function pointers, each pointing to a function of the same type.

Example 1 – To show compiler error

int main()
{
    void arr[100];
}

Output

error: declaration of 'arr' as array of voids 

Example 2- To illustrate the void pointers and function pointers

int main()
{
    void *arr[100];
}

FAQ- What Are The Data Types For Which It Is Not Possible To Create An Array?

Hridhya Manoj

Hello, I’m Hridhya Manoj. I’m passionate about technology and its ever-evolving landscape. With a deep love for writing and a curious mind, I enjoy translating complex concepts into understandable, engaging content. Let’s explore the world of tech together