Question

How to extract all numbers from string using regex in C++

Answer 1

#include <iostream>
#include <string>
#include <regex>
 
int main() {
    std::string s = "abc 9836 xy%^(s 21 * 9 ppp r100s";
 
    std::regex rgx("\\d+");
    for (std::sregex_iterator i = std::sregex_iterator(s.begin(), s.end(), rgx);
         i != std::sregex_iterator();
         ++i) {
         
        std::cout << i->str() << "\n";
    }
}
  
  
  
  
/*
run:
  
9836
21
9
100
  
*/
 

 

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