C program to reverse an array using pointers. For example, float x[3][4]; Here, x is a two-dimensional (2d) array. C program to swap two arrays using pointer. “Hi”, “Hello”, and e.t.c are the examples of String. However, to work with multi-level data, we have to use the Multi-Dimensional Array. To declare an array of Strings in C, we must use the char data type. Access a 2d array using a single pointer. Feel free to checkout that tutorial. A one dimensional array can be easily passed as a pointer, but syntax for passing a 2D array to a function can be difficult to remember. Similarly, the array of Strings is nothing but a two-dimensional (2D) array of characters. A two-dimensional array is, in essence, a list of one-dimensional arrays. In this topic, we are going to learn about 2D Arrays in C++. In this tutorial, you will learn to work with arrays. 2D Array is considered to be one of the simplest form under the multidimensional array. In C/C++, when you pass an array to a function, it decays to be a pointer pointing to first element of the array.So, in pixels() function, you are returning the address of a stack allocated variable. To store the entire list we use a 2d array of strings in C language. The reasons for this are twofold: the main problem is that arrays are not pointers and the second inconvenience is the so called pointer decay. In the previous tutorial Pointers and One Dimensional Array we learned to work with one dimensional character array. You can consider the 2D array to be an array of a 1D array so as to comprehend it easily. These arrays are known as multidimensional arrays. An array is a variable that can store multiple values. C program to copy one array to another using pointers. The array of characters is called a string. In this tutorial we will learn to work with two dimensional arrays using pointers in C programming language. Arrays can also be classified based on their dimensions, like:. You can pass multi-dimensional arrays to functions just like a 1-D array, but you need to specify the size of the all other dimensions except the first one. Let’s take an example, Suppose int aiData[3][3] is a 2D array that has 3 rows and 3 columns. In C programming, you can create an array of arrays. If the data is linear, we can use the One Dimensional Array. The returning variable's address is no longer valid because on pixels() return, the stack allocated variable goes out of scope. The calculation of the offset depends on the array dimensions. The array can hold 12 elements. An m × n (read as m by n) order matrix is a set of numbers arranged in m rows and n columns. You can think the array as a table with 3 rows and each row has 4 columns. The Two Dimensional Array in C language is nothing but an Array of Arrays. This post is an extension of How to dynamically allocate a 2D array in C? Two-dimensional Arrays : : The simplest form of multidimensional array is the two-dimensional array. For example, if you want to store 100 integers, you can create an array for it. You will learn to declare, initialize and access elements of an array with the help of examples. For e.g: If you need to pass arr[2][3] to a function called func_1(), then you need to declare the func_1() like this: 1 2 3 4. In C language, the compiler calculates offset to access the element of the array. One important thing for passing multidimensional arrays is, first array dimension does not have to be specified. C Arrays. 1-D arrays or one-dimensional array; 2-D arrays or two-dimensional arrays; and so on… In this tutorial, we will learn more about the 2D array. C program to sort array using pointers. C program to search an element in array using pointers. 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