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using System;
 
using System.Collections.Generic;
using System.Text;
 
namespace PiramideAsteriscos
{
    class Program
    {
        static void Main(string[] args)
        {
 
            Console.WriteLine("8");
            inicio:
            Console.WriteLine("inserta en número el nivel de la pirámide, mayor a cero");
            try
            {
                int nivel = int.Parse(Console.ReadLine());
                if (nivel != 0)
                {
 
                    int a;
                    int espacios;
                    for (int i = 1; i <= nivel; i++)
                    {
                        StringBuilder final = new StringBuilder();
 
                        espacios = nivel - i;
                        a = i + (i - 1);
                        for (int i1 = 0; i1 < espacios; i1++)
                            final.Append(" ");
 
                        for (int i2 = 0; i2 < a; i2++)
                            final.Append("*");
 
                        Console.WriteLine(final.ToString());
 
                    }
                }
                else
                {
                    System.Console.Clear();
                    goto inicio;
                }
 
            }
            catch (Exception )
            {
                System.Console.Clear();
                Console.WriteLine("El programa solo acepta números enteros");
                goto inicio;
 
            }
 
            Console.WriteLine("" + "\n" + "Programa creado por LAURA");
            Console.WriteLine("" + "\n" + "Aprieta una tecla para salir");
            Console.ReadLine();
        }
    }
}
 
 

prog.cpp:3:7: error: expected nested-name-specifier before ‘System’
 using System;
       ^~~~~~
prog.cpp:5:7: error: expected nested-name-specifier before ‘System’
 using System.Collections.Generic;
       ^~~~~~
prog.cpp:6:7: error: expected nested-name-specifier before ‘System’
 using System.Text;
       ^~~~~~
prog.cpp:12:26: error: ‘string’ has not been declared
         static void Main(string[] args)
                          ^~~~~~
prog.cpp:12:35: error: expected ‘,’ or ‘...’ before ‘args’
         static void Main(string[] args)
                                   ^~~~
prog.cpp:61:5: error: expected ‘;’ after class definition
     }
     ^
prog.cpp: In static member function ‘static void PiramideAsteriscos::Program::Main(int*)’:
prog.cpp:15:13: error: ‘Console’ was not declared in this scope
             Console.WriteLine("8");
             ^~~~~~~
prog.cpp:20:29: error: expected primary-expression before ‘int’
                 int nivel = int.Parse(Console.ReadLine());
                             ^~~
prog.cpp:28:25: error: ‘StringBuilder’ was not declared in this scope
                         StringBuilder final = new StringBuilder();
                         ^~~~~~~~~~~~~
prog.cpp:33:29: error: ‘final’ was not declared in this scope
                             final.Append(" ");
                             ^~~~~
prog.cpp:36:29: error: ‘final’ was not declared in this scope
                             final.Append("*");
                             ^~~~~
prog.cpp:38:43: error: ‘final’ was not declared in this scope
                         Console.WriteLine(final.ToString());
                                           ^~~~~
prog.cpp:44:21: error: ‘System’ was not declared in this scope
                     System.Console.Clear();
                     ^~~~~~
prog.cpp:49:20: error: ‘Exception’ does not name a type
             catch (Exception )
                    ^~~~~~~~~
prog.cpp:51:17: error: ‘System’ was not declared in this scope
                 System.Console.Clear();
                 ^~~~~~
prog.cpp:57:34: error: invalid operands of types ‘const char [1]’ and ‘const char [2]’ to binary ‘operator+’
             Console.WriteLine("" + "\n" + "Programa creado por LAURA");
                               ~~~^~~~~~
prog.cpp:58:34: error: invalid operands of types ‘const char [1]’ and ‘const char [2]’ to binary ‘operator+’
             Console.WriteLine("" + "\n" + "Aprieta una tecla para salir");
                               ~~~^~~~~~

Standard output is empty