public class Calculate
{
  public static void main(String[] args)
  {
    double sum;
    System.out.println("You have enter "+args[0]+args[1]+args[2]);
    char c=args[1];    
    double a=Double.parseDouble(args[0]);
    double b=Double.parseDouble(args[2]);
    switch(c)
    {
    case '*':sum=a*b;
      System.out.println(a+"*"+b+"="+sum);break;
    case '/':sum=a/b;
      System.out.println(a+"/"+b+"="+sum);break;
    case '+':sum=a+b;
      System.out.println(a+"+"+b+"="+sum);break;
    case '-':sum=a-b;
      System.out.println(a+"-"+b+"="+sum);break;
    case '%':sum=(int)a%(int)b;
      System.out.println(a+"%"+b+"="+sum);break;
    default:break;
    }
  }
}