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#include <iostream>
#include <regex>
int main()
{
//Regex objects
//std::regex obj = std::regex("a");
//std::regex obj = std::regex("z");
// . checks any character - metacharacters: https://www.regular-expressions.info/characters.html#special
//std::regex obj = std::regex(".");
// ? is a quantifier meaning 0 or one occurences of the preceding regex atom: repetition operator
//std::regex obj = std::regex("a?");
// + is a quantifier meaning 1 or more occurences of the preceding regex atom
//std::regex obj = std::regex("z+");
// * is a quantifier meaning 0 or more occurences of the preceding regex atom
//std::regex obj = std::regex("z*");
// ^ means starting
//std::regex obj = std::regex("^z");
// $ means ending
//std::regex obj = std::regex("z$");
// class
//std::regex obj = std::regex("[A-Za-z0-9]");
//check if the string is numeric
// Checking if a name has lower cases or spaces
//std::regex obj = std::regex("^[a-z\\s]+$");
std::string myText = std::string("hello world.");
bool myTextContainsRegex = std::regex_search(myText, obj);
std::cout << std::boolalpha << myTextContainsRegex << '\n';
// Regex search vs match
//https://www.fluentcpp.com/2020/02/28/c-regex-101-simple-code-for-simple-cases-with-regexes/
}
Compiling Program...
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