using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Oracle.ManagedDataAccess.Client;
using System.Collections;
using System.Data;
using System.Configuration;



namespace ADO_Net_App1 //DO NOT change the namespace name
{
    public class Program //DO NOT change the class name
    {
        static void Main(string[] args) //DO NOT change the 'Main' method signature
        {
            //Implement the code here

            ElectricityBoard eb = null;

            DBHandler db = new DBHandler();

            OracleConnection con = db.GetConnection();

            List<ElectricityBill> l2 = new List<ElectricityBill>();

            Console.WriteLine("Enter Number of Bills To Be Added : ");

            int totBill = Convert.ToInt32(Console.ReadLine());

            for (int cnt = 0; cnt < totBill; cnt++)
            {
                Console.WriteLine("Enter Consumer Numer : ");
                String conNo = Console.ReadLine();
                Console.WriteLine("Enter Consumer Name : ");
                String name = Console.ReadLine();
                Console.WriteLine("Enter Units Consumed : ");
                int units = Convert.ToInt32(Console.ReadLine());

                ElectricityBill ebill = new ElectricityBill();
                try
                {
                    ebill.ConsumerNumber = conNo;
                }
                catch (FormatException e)
                {
                    Console.WriteLine(e);
                }
                ebill.ConsumerName = name;
                ebill.UnitsConsumed = units;
                eb = new ElectricityBoard();
                eb.CalculateBill(ebill);
                eb.AddBill(ebill);
                l2.Add(ebill);
            }
            Console.WriteLine();

            Console.Write("Enter Last 'N' Number of Bills To Generate : ");
            int num = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine();
            foreach (var p in l2)
            {
                Console.WriteLine(((ElectricityBill)p).ConsumerNumber);
                Console.WriteLine(((ElectricityBill)p).ConsumerName);
                Console.WriteLine(((ElectricityBill)p).UnitsConsumed);
                Console.WriteLine("Bill Amount: "+((ElectricityBill)p).BillAmount);
            }

            List<ElectricityBill> l1 = eb.Generate_N_BillDetails(num);

            Console.WriteLine("Details of Bill Generation");
            Console.ReadKey();
            foreach (var ie in l1)
            {
                Console.WriteLine("EB Bill for " + ((ElectricityBill)ie).ConsumerName +" is "+ ((ElectricityBill)ie).BillAmount);
            }

            Console.ReadKey();
        }
    }

    public class BillValidator //DO NOT change the class name
    {

        public String ValidateUnitsConsumed(int UnitsConsumed) //DO NOT change the method signature
        {
            //Implement code here
            if (UnitsConsumed<0)
            {
                return "Given units is invalid";
            }
            else
            {

                return " ";
            }
        }
    }
}

C Sharp Online Compiler

Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.

Read inputs from stdin

OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

using System;
 
namespace Sample
{
  class Test
    {
      public static void Main(string[] args)
       {
         string name;
         name = Console.ReadLine();
         Console.WriteLine("Hello {0} ", name);
	}
     }
}

About C Sharp

C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.

You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.

Syntax help

Data types

Data TypeDescriptionRangesize
intTo store integers-2,147,483,648 to 2,147,483,6474 bytes
doubleto store large floating point numbers with decimalscan store 15 decimal digits8 bytes
floatto store floating point numbers with decimalscan store upto 7 decimal digits4 bytes
charto store single characters-2 bytes
stringto stores text-2 bytes per character
boolto stores either true or false-1 bit

Variables

Syntax

datatype variable-name = value;

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.

if(conditional-expression) {
   // code
} 
else {
   // code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement) {
  // code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {
 // code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition);

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

data-type[] array-name;

Methods

Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.

Syntax

static void method-name() 
{
  // code to be executed
}