In this tutorial, we will write a C# program to find the length of an array entered by the user, we have used while loop and try–catch block for the exception
Question:
Write a C# program to find the length of an Array.
Solution:
Here first we take the arrays from the user and to exit from an array user need to enter –999 at last. -999 is an exit value that is defined at the beginning of the program.
To take the user input, while loop is used inside which try-and catch blocks are executed. lastly array.Length is used to get how many elements the user entered.
C# Program to find the length of an Array.
It can also be done without the use of try-catch block
Source Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | using System; using System.Collections; using System.Collections.Generic; using System.Linq; class Program { static void Main(string[] arg) { //CONSTANT VALUE TO EXIT const int EXIT_VALUE = -999; List<int> numbers = new List<int> (); Console.WriteLine("Enter the number and press -999 at the end:"); while (true) { try { var input = Console.ReadLine(); int i = int.Parse(input); if (i == EXIT_VALUE) break; numbers.Add(i); } catch (System.Exception ex) { Console.WriteLine("Invalid Input!!"); } } int[] array = numbers.ToArray(); Console.WriteLine("Length of an Array is:{0}", array.Length); } } |
Output:
