《Essential C++》系列笔记之第二章(面向过程的编程风格)之第四节(使用局部静态对象)

代码实践

#include 
using namespace std;
#include 

const vector<unsigned int>* fib(int size)
{
	static vector<unsigned int> nums;
	
	if (size <= 0 || size >= 1024)
	{
		cerr << "size <= 0 || size >= 1024" << endl;
		return 0;
	}

	for (int i = nums.size(); i < size; i++)
	{
		if (i == 0 || i == 1)
		{
			nums.push_back(1);
		}
		else
		{
			nums.push_back(nums[i - 2] + nums[i - 1]);
		}
	}
	return &nums;
}

void Print(const vector<unsigned int>* fib)
{
	if (!fib)
	{
		cerr << "Error: !fib" << endl;
		return;
	}

	for (int i = 0; i < (*fib).size(); i++)
	{
		cout << (*fib)[i] << ' ';
	}
	cout << endl;
}

int main()
{
	const vector<unsigned int>* v = fib(1000);
	
	Print(v);

	system("pause");
	return 0;
}

今天是20200303 写代码好有讲究啊！正规、大气的编程风格不简单！