public static Operation CreateOperate(string operate)
{
Operation oper = null;
switch (operate)
{
case "+":
oper = new OperationAdd();
break;
case "-":
oper = new OperationMul();
break;
case "*":
oper = new OperationMub();
break;
case "/":
oper = new OperationDiv();
break;
default:
break;
}
return(oper);
}
/// <summary>
/// 返回实例对象
/// </summary>
/// <param name="operation"></param>
/// <returns></returns>
public static Operation CreateOperation(string operation)
{
Operation operationObj = null;
switch (operation)
{
case "+":
operationObj = new OperationAdd();
break;
case "-":
operationObj = new OperationSub();
break;
case "*":
operationObj = new OperationMul();
break;
case "/":
operationObj = new OperationDiv();
break;
}
return(operationObj);
}