Customer bill information, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
          int pizzitem=2;
string item="";
string item2="";
int q1=5  ;
int q2=3 ;
int acost=0;
int bcost=0;
int aditem=1;
int total=0;
int discount=0;
switch(pizzitem)
{
case 1:  item="veg pizza ";
acost=130;
acost=acost*q1;
break;
case 2:
item="chicken_pizza";
acost=600;
acost=acost*q1;
break;
}
Console.WriteLine("---------Customer Bill Information----------");
Console.WriteLine("                   Item=     "+item);
Console.WriteLine("                  Qty  =         "+q1);
Console.WriteLine("                  Cost=       "+acost);
Console.WriteLine("............................................................................");
switch(aditem)
{
case 1: item2="softdrink   ";
bcost=100;
bcost=bcost*q2;
break;
case 2:
item2="Manchrian     ";
bcost=80;
bcost=bcost*q2;
break;
}
Console.WriteLine("                   Item=   "+item2);
Console.WriteLine("                  Qty =           "+q2);
Console.WriteLine("                  Cost=       "+bcost);
Console.WriteLine("............................................................................");
total=acost+bcost;
discount=total*5/100;
total=total-discount;
Console.WriteLine("                   Disc=          "+discount);
Console.WriteLine("............................................................................");
Console.WriteLine("                   Amount=   "+total);
Console.WriteLine("       thank you and Visit Again!!!!!!!!!!!!!!");
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,18 sec, absolute running time: 0,12 sec, cpu time: 0,11 sec, average memory usage: 14 Mb, average nr of threads: 3