using System;class Program{ static void Main() { int num; Console.Write("Enter a positive integer greater than 0: "); while (!int.TryParse(Console.ReadLine(), out num) || num <= 0) { Console.Write("Invalid input! Please enter a positive integer greater than 0: "); } for (int i = 1; i <= num; i++) { for (int j = 0; j < i; j++) { Console.Write("*"); } Console.WriteLine(); } for (int i = num - 1; i > 0; i--) { for (int j = 0; j < i; j++) { Console.Write("*"); } Console.WriteLine(); } }}
Console.Write("enter number"); Console.ReadLine(); int num; while (!int.TryParse(Console.ReadLine(), out num)) { Console.Write("Invalid input! Please enter a positive integer greater than 0."); } for (int i = 0; i < num; i++) { for (int j = 0; j < i; j++) { Console.Write("*"); } Console.Write("\n"); } for (int i = 0; i < - num; i++) { for(int j = i; j > 0; j++) { Console.Write("*"); } } Console.Write("*");