using System;

public class Program

{

    public static void Main()

    {

        int und1 = 0, und2 = 0, und3 = 0, und4 = 0, und5 =0, und6 = 0;

        int i = 1;

        int cost = 60;      

        while(i <= 6){

            Console.WriteLine("Ingresar las unidades de material " + i + ": ");

            if( i == 1){

                und1 = Convert.ToInt32(Console.ReadLine());

            }else if(i == 2){   

                und2 =  Convert.ToInt32(Console.ReadLine());

            }else if(i == 3){

                und3 =  Convert.ToInt32(Console.ReadLine());

            }else if(i == 4){

                und4 = Convert.ToInt32(Console.ReadLine());

            }else if(i == 5){

                und5 =  Convert.ToInt32(Console.ReadLine());

            }else if(i == 6){

                und6 =  Convert.ToInt32(Console.ReadLine());

            }

            i++;

        }

        Console.WriteLine(" Material        Total Unidades            Costo Estimado");

        Console.WriteLine("    1                  " + und1 + "                                 " + und1 * cost);

        Console.WriteLine("    2                  " + und2 + "                                 " + und2 * cost);

        Console.WriteLine("    3                  " + und3 + "                                 " + und3 * cost);

        Console.WriteLine("    4                  " + und4 + "                                 " + und4 * cost);

        Console.WriteLine("    5                  " + und5 + "                                 " + und5 * cost);

        Console.WriteLine("    6                  " + und6 + "                                 " + und6 * cost);

    }

}

​