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What this article shares with you is about the difference between one-dimensional array and two-dimensional array. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article. Let's take a look at it with the editor.

Each element in an one-dimensional array has only one subscript, which is essentially a linear set of the same type of data, while each element in a two-dimensional array can be used as an array, which is essentially an array of array elements.

Array array

An array is an ordered sequence of elements. If you name a limited collection of variables of the same type, the name is the array name. The variables that make up an array are called the components of the array, also known as the elements of the array, and sometimes called subscript variables. The numerical number of each element used for a score group is called a subscript. Array is a form in which several elements of the same type are organized in an orderly form for convenience in programming. These ordered collections of similar data elements are called arrays.

An array is a collection used to store multiple data of the same type.

The source of the array

In C language, arrays belong to the construction data type. An array can be decomposed into multiple array elements, which can be basic data types or construction types. Therefore, according to the type of array elements, arrays can be divided into numeric arrays, character arrays, pointer arrays, structure arrays and other categories.

On the variable length array (VLA) problem: the original C89 standard does not allow variable length array, but in the C99 standard, added support for VLA, but not many compilers, and due to stack overflow security problems, not many people dare to use this variable length array, so it is defined as an optional function in the C11 standard.

If you have any experience of programming in other languages, you must be familiar with the concept of arrays. Because of the array, you can refer to a series of variables with the same name and identify them with numbers (indexes). In many cases, using arrays can shorten and simplify the program, because you can use index values to design a loop to handle a variety of situations efficiently. The array has upper and lower bounds, and the elements of the array are continuous within the upper and lower bounds. Because Visual Basic allocates space for each index value, don't unrealistically declare an array that is too large.

Here the array is an array of variables declared in the program. They are different from control arrays, which are specified at design time by setting the control's Index property. Arrays of variables are always contiguous; unlike control arrays, array elements cannot be loaded or unloaded from the middle of an array.

All elements in an array have the same data type (in C, C++, Java, pascal). But this is not the case in all places where arrays are involved, for example, arrays in Visual Foxpro are not required. Of course, when the data type is Variant, each element can contain different kinds of data (objects, strings, numeric values, and so on). You can declare an array of any basic data type, including user-defined types and object variables.

The above is the difference between one-dimensional array and two-dimensional array. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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