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/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package javaapplication8;

import javax.swing.JOptionPane;

/**
 *
 * @author CTI
 */
public class JavaApplication8 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        
        int num;
        char c='1';
        
        
        
        
        
        while(c=='1'){
            num=Integer.parseInt(JOptionPane.showInputDialog(null,""));
            
                  switch(num){
            case 1:{
                int num1,num2;
                String nums="";
        do{
             num1=Integer.parseInt(JOptionPane.showInputDialog(null," Enter the First Number"));
        }while(num1 <=0);
       
        do{
              num2=Integer.parseInt(JOptionPane.showInputDialog(null," Enter the Second Number"));
              if(num2<num1 && num2>0)
              {
                  JOptionPane.showMessageDialog(null,"the Second Number "+num2+ " > "+num1 );
              }
              else if(  num2<= 0){
                   JOptionPane.showMessageDialog(null,"the Second Number "+num2+ " < Zero" );
              }
        }while( num2 <num1);
         
          
          
         
        for(int x=num1; x<=num2; x++ ){
            
            if(x%2!=0){
                nums+= x+" ";
            }
        }
        JOptionPane.showMessageDialog(null,"the numbers between "+num1 + " and "+num2 +" is : " + nums);
        int n=JOptionPane.showConfirmDialog(null, "",JOptionPane.YES_NO_OPTION);
        JOptionPane.showMessageDialog(null,"the area of traingle "+n);
        
           break; }
            
            case 2:{
               int num1,num2;
                String nums="";
        do{
             num1=Integer.parseInt(JOptionPane.showInputDialog(null," Enter the base"));
        }while(num1 <=0);
       
        do{
              num2=Integer.parseInt(JOptionPane.showInputDialog(null," Enter the height"));
              /*if(num2<num1 && num2>0)
              {
                  JOptionPane.showMessageDialog(null,"the Second Number "+num2+ " > "+num1 );
              }
              else if(  num2<= 0){
                   JOptionPane.showMessageDialog(null,"the Second Number "+num2+ " < Zero" );
              }*/
        }while( num2  <=0);
       double sum;
              sum  =0.5 * num1*num2;
              JOptionPane.showMessageDialog(null,"the area of traingle "+sum);
           break; }
            case 3:{
                int numsOfEmp=Integer.parseInt(JOptionPane.showInputDialog(null," Enter the numbers of emplyees"));
                double sum=0.0,avg=0.0;
                String names[]=new String[numsOfEmp];
                double sal[]=new double[numsOfEmp];
                
                for(int i=0; i<names.length; i++){
                    names[i]=JOptionPane.showInputDialog(null," Enter the name "+ (i+1));
                    sal[i]=Integer.parseInt(JOptionPane.showInputDialog(null," Enter the Salary For " + names[i]));
                     sum +=sal[i];
                }
                avg=sum/numsOfEmp;
                JOptionPane.showMessageDialog(null,"the Total of salaries "+sum+ " \n The avarage is "+ avg);
            }
        }
            
        }
  
        
    }
    
}