What is an Array?Īn Array is a data structure that holds elements of the same data type in contiguous memory locations. The main advantage of an Array is flexibility and ease of storing elements of the same type. Hopefully, this article helped you understand how to find the size of an array in the C programming language using the built-in sizeof operator.In this tutorial, we will learn Arrays in Flowgorithm flowchart. Something to note here is the size of data types will vary from platform to platform. Printf("The length of the array is %d \n", size) Size_t size = sizeof(faveNumbers) / sizeof(faveNumbers) In programming and Computer Science in general, indexing always starts at 0, so the first element in an array will always have an index of 0. To access the first element in an array, specify the name and, in square brackets, include 0. So, you can divide the total number of bytes by the size of the first element in the array. To find the length of the array, you need to divide the total amount of memory by the size of one element - this method works because the array stores items of the same type. You will need some extra programming logic, which will look something like this: array_length = (total size of the array) / (size of the first element in the array) However, the code above doesn't calculate the size of the array directly. using sizeof to get the size of the array in bytes Now, let's see this operation in action and break it down into individual steps to see how it works.įirstly, the sizeof operator returns the total amount of memory allocated to the array in bytes.
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