关于循环、判断的练习题

前面学习了循环、判断常用的形式，现在来动手自己联系编写一下吧
练习的解决方案有很多种，如有错误，请多多指教。
1 运用for循环，完成数组倒序的访问

#include "stdafx.h"
#include "iostream"
#include "string"
using namespace std;
int main()
{
	int Buffer[25] = { 0 };
	int arrayindex = 0;
	cout << "Please input the element "<<endl;
	for (arrayindex = 0; arrayindex <= 4; ++arrayindex)
	{
		cout << "the element is " << arrayindex<<": ";
		cin >> Buffer[arrayindex];
	}
	cout <<endl<< "invert of Buffer is : " << endl;
	for (arrayindex = 4; arrayindex >=0; --arrayindex)
	{
		cout << "the element is " << arrayindex<<": ";
		cout << Buffer[arrayindex]<<endl;
	}
	system("pause");
    return 0;
}

另一种方法：
要注意循环的初值为：arrayindex = LineEnter.length()-1
原因是：标签比字符串的长度小1，区分上面直接使用数组标签的区别

#include "stdafx.h"
#include "iostream"
#include "string"
using namespace std;
int main()
{
	char Buffer[20] = { '\0' };
	cout << "Enter a line of text" << endl;
	string LineEnter;
	cin >> LineEnter;
	if (LineEnter.length() < 20)
	{
		strcpy_s(Buffer, LineEnter.c_str());
		cout << "Buffer is : " << Buffer << endl;
	}
	cout <<endl<< "invert of Buffer is : " << endl;
	int arrayindex = 0;
	for (arrayindex = LineEnter.length()-1; arrayindex >=0; --arrayindex)
	{
		cout << "the element is " << arrayindex<<": ";
		cout << Buffer[arrayindex]<<endl;
	}
    system("pause");
    return 0;
}

输出的结果如下图所示：