What is the correct way to declare a 2D array in C?

In C, you can declare a 2D array in the following way:

int arrayName[row_size][column_size];

Here's a step-by-step guide:

1. Start with the type of data that will be stored in the array. This could be int, float, char, etc. For example, let's use int.

2. Next, provide a name for the array. This can be any valid variable name. For example, let's use arrayName.

3. After the name, provide the dimensions of the array in square brackets. The first number is the number of rows and the second number is the number of columns. For example, if you want an array with 3 rows and 4 columns, you would write [3][4].

4. End the line with a semicolon.

So, a 2D array with 3 rows and 4 columns would be declared as follows:

int arrayName[3][4];

This creates a 2D array that can hold 12 integers, arranged in 3 rows and 4 columns.