public Context_Cl(string flag)
{
switch (flag)
{
case "1":
oper = new Add_Cl();
break;
case "2":
oper = new Sub_Cl();
break;
default:;
break;
}
}
public override Operat_Cl GetObject()
{
return operatCl=new Sub_Cl();
}
public override Operat_Cl GetObject()
{
return(operatCl = new Sub_Cl());
}