C++中regex匹配中⽂字符⼀例#include <iostream>
#include <regex>
#include <tchar.h> //_T
using namespace std;
int main()
{
/*string s0 = "学正楼";
cout << s0[0] ;
cout << s0[1] << endl;
*/
//wcout.imbue(locale("chs", locale::ctype));  //据说有平台问题
/
/wstring s1 = L"学正楼";
//wcout << s1[0];
std::locale loc("");
std::wcout.imbue(loc);
std::wstring text(L"我的IP地址是:109.168.0.1.");
std::wstring newIP(L"127.0.0.1");
std::wstring regString(L"(\\d+)\\.(\\d+)\\.(\\d+)\\.(\\d+)");
// 表达式选项 - 忽略⼤⼩写
std::regex_constants::syntax_option_type fl = std::regex_constants::icase;
// 编译⼀个正则表达式语句
std::wregex regExpress(regString, fl);
/
/ 保存查的结果
std::wsmatch ms;
// 判断是否全⾏匹配
if (std::regex_match(text, ms, regExpress))
{
std::wcout << L"正则表达式:" << regString << L"匹配:" << text << L"成功." << std::endl;
}
else
{
std::wcout << L"正则表达式:" << regString << L"匹配:" << text << L"失败." << std::endl;
}
/
/ 查
if (std::regex_search(text, ms, regExpress))
{
std::wcout << L"正则表达式:" << regString << L"查:" << text << L"成功." << std::endl;
for (size_t i = 0; i < ms.size(); ++i)
{
std::wcout << L"第" << i << L"个结果:\"" << ms.str(i) << L"\" - ";
std::wcout <<L"起始位置:" << ms.position(i) << L"长度" << ms.length(i) << std::endl;
}
std::wcout << std::endl;
include中文// 替换1
text = place(ms[0].first, ms[0].second, newIP);
std::wcout << L"替换1后的⽂本:" << text << std::endl;
}
else
{
std::wcout << L"正则表达式:" << regString << L"查:" << text << L"失败." << std::endl;
}
// 替换2
newIP = L"255.255.0.0";
std::wstring newText = std::regex_replace(text, regExpress, newIP);    std::wcout << L"替换2后的⽂本:" << newText << std::endl;
// 结束
std::wcout << L"按回车键结束...";
std::();
return0;
getchar();
return0;
}

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