C program to create an array

In this tutorial, we will learn to work with arrays. For example,. Suppose a class has 27 students, and we need to store the grades of all of them. Instead of creating 27 separate variables, we can simply create an array:. Here, grade is an array that can hold a maximum of 27 elements of double type. The number is known as an array index. We can access elements of an array by using those indices. Here, we have not mentioned the size of the array. In such cases, the compiler automatically computes the size.

However, what will happen if we store less than n number of elements. Here, the array x has a size of 6. However, we have initialized it with only 3 elements. In such cases, the compiler assigns random values to the remaining places. Oftentimes, this random value is simply 0. In each iteration, we have printed numbers[i]. We again used a range based for loop to print out the elements of the array.

In each iteration, we took an input from the user and stored it in numbers[i]. There are following ways to dynamically allocate a 3D array:. Even though the memory is linearly allocated, we can use pointer arithmetic to index 3D array. I hope you enjoy this article.

I would like to have your feedback. Please post your feedback, question, or comments about this article. A specific element in an array is accessed by an index. All arrays consist of contiguous memory locations.

The lowest address corresponds to the first element and the highest address to the last element. This is called a single-dimensional array. The arraySize must be an integer constant greater than zero and type can be any valid C data type.

If you omit the size of the array, an array just big enough to hold the initialization is created. You will create exactly the same array as you did in the previous example. The above statement assigns the 5 th element in the array with a value of All arrays have 0 as the index of their first element which is also called the base index and the last index of an array will be total size of the array minus 1.

An element is accessed by indexing the array name.