How To Read An Array Without Knowing Its Size In C, , int []), you would need to convert the ArrayList to a primitive array You cannot initialize an array at compile-time if you are determining the size at run-time. Keep in mind that if you need a primitive array (e. For example, when However, before you actually initialize an array you need to know how many elements are going to be in that array, normally by reading user input. In the first case, you are creating an array containing some element by implicitly declaring its size. Is there anyway that let us We would like to show you a description here but the site won’t allow us. You are not able to change the size of the array after creation. Fixed Size (Arrays) vs. Because this value must be 2 Read the entire line using sc. nextLine() and then split() using \\s+. Once you have your number of elements, Given an array (you don't know the type of elements in the array), find the total number of elements in the array without using the sizeof () operator.

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