第七次课程作业

第七次课程作业

github链接：Arithmetic3.7

截图

Random* RandomFactory::Create(std::string& model,int& n)
{
	if (model == "Number")
	{
		return new RandomNumber(n);
	}
	else if (model == "Operation")
	{
		return new RandomOperation(n);
	}
	else
	{
		assert(false);
	}
	return NULL;
}

void equation::initequation()
{
	result_0 = 9.9;
	while (result_0 != (int)result_0)
	{
		int* in;
		char * ch;
		string modeName;
		Random * random = NULL;
		digit_num = rand() % 3 + 5;              //5-7位运算

		memset(m, 0, 30);
		memset(n, '\0', 50);
		
		modeName = "Number";
		random = RandomFactory::Create(modeName, digit_num);
		in = random->geti();
		for (int i = 0;i < 30;i++) m[i] = in[i];

		modeName = "Operation";
		random = RandomFactory::Create(modeName, digit_num);
		ch = random->getc();
		for (int i = 0;i < 50;i++) n[i] = ch[i];

		delete random;
		random = NULL;

		try
		{
			clean();
			toget();
			result_0 = result(); //进行计算
		}
		catch (const string &e)
		{
		}
	}
	print();
}

感想

关于父类子类的应用就是上课老师讲的，正常做就可以，关于简单工厂模式，我认为可能在很大的工程里会很有用，加强代码的后期可维护性和封装性，使代码设计得更人性化。

学习链接：

1.http://blog.chinaunix.net/uid-25958655-id-4243289.html
2.http://blog.csdn.net/chollima/article/details/3985570