逆转字符串

逆转字符串——输入一个字符串，将其逆转并输出

#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <string>

using namespace std;

//ANSIC,有中文就出错
//bool ReverseStringA(char* str)
//{
//	int len = strlen(str);
//	unsigned char temp;
//	for (int i = 0; i < len / 2; ++i)
//	{
//		temp = str[i];
//		str[i] = str[len - i - 1];
//		str[len - i - 1] = temp;
//	}
//	return true;
//}

//UNICODE，双字节
bool ReverseStringW(wchar_t* str)
{
	int len = wcslen(str);
	wchar_t temp;
	for (int i = 0; i < len / 2; ++i)
	{
		temp = str[i];
		str[i] = str[len - i - 1];
		str[len - i - 1] = temp;
	}
	return true;
}

bool ReverseString(char* str)
{
	const char* local = setlocale(LC_ALL, NULL);//返回当前本地化,setlocale(LC_ALL,"")才是使用默认本地化
	char* setlocal = setlocale(LC_ALL, "chs");

	int len = mbstowcs(NULL, str, NULL);
	wchar_t* buf = new wchar_t[len + 1];
	wmemset(buf, 0, len + 1);
	int change = mbstowcs(buf, str, len+1);
	if (change == len)
	{
		if (!ReverseStringW(buf))
		{
			goto ERROR;
		}
		change = wcstombs(NULL, buf, NULL);
		change = wcstombs(str, buf, change + 1);
		delete []buf;
		setlocal = setlocale(LC_ALL, "");
		return true;
	}

ERROR:
	delete[]buf;
	setlocal = setlocale(LC_ALL, "");
	return false;
}

int main(int argc, char* argv[])
{
	//char* str = "abcde";//代码区
	//char str[] = "abcde";
	char str[] = "含有中文abc";
	//wchar_t* str = L"含有中文abc";//代码区，又犯了！
	//wchar_t str[] = L"含有中文abc";

	//std::locale loc("");
	//std::wcout.imbue(loc);
	if (ReverseString(str))
		cout << str << endl;
		//wcout << buf << endl;

	system("pause");
	return 0;
}