在基類中定義一套演算法框架，子類只能更改特定的實現細節。

程式碼示例：

class AbstractClass 
{
	public:
	void templateMethod()
	{
		function1();
		function2();
	}
	
	protected:
	virtual void function1()
	{
		cout << "invoke the function1 of AbstractClass" << endl;
	}
	virtual void function2()
	{
		cout << "invoke the function2 of AbstractClass" << endl;
	}
};


class SubClass1 : public AbstractClass
{
	protected:
	virtual void function1()
	{
		cout << "invoke the function1 of SubClass1" << endl;
	}
	
};