C Language Basic to Advance Course > Derived Datatypes

2D Arrays

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An array of arrays can be defined as a two-dimensional array. The matrices that make up the 2D array are represented as a collection of rows and columns. 2D arrays, on the other hand, are used to build a data structure that resembles that of a relational database.

A two-dimensional array is identical to a one-dimensional array, except it looks like a grid (or table) with rows and columns. Horizontal and vertical reference numbers are used to reference positions in a two-dimensional array, much like a map.

C for Software Engineering:

  • A two-dimensional array is a collection of homogenous components that are arranged in a number of rows and columns. The term "matrix" refers to a collection of rows and columns. The elements and data are kept in a tabular format.

Accessing Elements in Two-Dimensional Arrays: Row and column indexes are used to access elements in two-dimensional arrays. Example: int x[2][1]; The element in the third row and second column is represented by the above example.

Use the new keyword, followed by a space, the type, the number of rows in square brackets, and the number of columns in square brackets to construct an array, such as this new int[numRows][numCols]. In a 2D array, the number of rows times the number of columns equals the number of elements.

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  1. Introduction to C Programming
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  1. Declaration & Initialization of Arrays
    17m 30s
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    12m 33s
  3. Types of Arrays
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  4. 2D Arrays
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    25m 9s
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  1. Typedef Function in C Programming
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