}else{std::cout<<"The string does not match the pattern."<<std::endl; }return0; } 输出结果: Thestringmatchesthe pattern. 2. 在字符串中搜索匹配项 实例 #include<iostream>#include<string>#include<regex>intmain(){std::stringtext ="123-456-7890 and 987-654-3210";std::regexpattern("\d...
Your regular expression does not match the subject string. Quick Reference Search reference All Tokens Common Tokens General Tokens Anchors Meta Sequences Quantifiers Group Constructs Character Classes Flags/Modifiers Substitution A single character of: a, b or c [abc] A character except: a, b ...
if (std::regex_match(text, pattern)) { std::cout << "The string matches the pattern." << std::endl; } else { std::cout << "The string does not match the pattern." << std::endl; } return 0; }输出结果: The string matches the pattern.2. 在字符串中搜索匹配项实例...
#include<iostream>#include<regex>intmain(){std::stringstr ="Hello, World!";std::regexpattern("Hello,.*");if(std::regex_match(str, pattern)) {std::cout<<"String matches the pattern."<<std::endl; }else{std::cout<<"String does not match the pattern."<<std::endl; }return0; } ...
trieregexdoes not include any default boundaries (such asr'\b') in the pattern returned from itsTrieRegEx.regex()method, that way the user can determine what is appropriate for each particular use case. Consider a fictitious brand name!Citruswith an exclamation mark at the beginning, and tryin...
#include <iostream> #include <regex> #include <string> intmain(void){ if(std::regex_match("subject",std::regex("(sub).(.*)"))){ std::cout <<"string literal matched\n"; } std::string s("subject"); std::regex e("(sub)(.*)"); ...
A character not in the range: a-z [^a-z] A character in the range: a-z or A-Z [a-zA-Z] Any single character . Alternate - match either a or b a|b Any whitespace character \s Any non-whitespace character \S Any digit
because it's not the beginning of a line).If not set, then the beginning-of-line operator does match the beginning of the string. REG_NOTEOL 和上边那个作用差不多,不过这个指定结束end of line。 3. void regfree (regex_t *compiled) ...
#include<iostream>#include<regex>#include<string>intmain(void){if(std::regex_match("subject",std::regex("(sub).(.*)"))){std::cout<<"string literal matched\n";}std::strings("subject");std::regexe("(sub)(.*)");if(std::regex_match(s,e)){std::cout<<"string literal matched\...
#include<iostream>#include<regex>intmain(){std::stringstr ="Hello, world!";std::regexreg("Hello, world!");if(std::regex_match(str, reg)) {std::cout<<"String matches the regex"<<std::endl; }else{std::cout<<"String does not match the regex"<<std::endl; }return0; } ...