global class Batch_AddConToAcc implements Database.Batchable <sObject>,Database.Stateful,Database.AllowsCallouts {
     
     public List<String> nam=new List<String>();
     public Integer processedrecord=0;
    public String exp;
   String query = 'SELECT Id, Name FROM Account WHERE checkacc__c = True';
    global Database.QueryLocator start(Database.BatchableContext bc) {
         
        return Database.getQueryLocator(query);
    }
 
    global void execute(Database.BatchableContext bc,List<Account> batch) {
       List<Account> acnt=new List<Account>();
        List<contact> lstCon = new List<Contact>();
        for (Account a : batch) {
           
            Contact c =  new Contact();
            c.LastName = a.Name;
        c.AccountId = a.Id;
            lstCon.add(c);
            a.checkacc__c = False;  
            acnt.add(a);
            processedrecord=processedrecord+1;
            nam.add(a.Name);
        }
        try{
        INSERT lstCon;
    }
        catch(Exception e){
            exp= e.getMessage();
        }
 update acnt;
        
        }
    
    global void finish(Database.BatchableContext bc) {
     

AsyncApexJob ajob = [SELECT Id, Status, NumberOfErrors, JobItemsProcessed,
                          TotalJobItems, CreatedBy.Email
                          FROM AsyncApexJob WHERE Id =
                          :bc.getJobId()];
 EmailUtility.sendSimpleEmail(ajob.Status,processedrecord,nam,exp);      
        
        
      
        }     
       
    }