Question

How to left trim a string in C++

Answer 1

#include <string>
#include <iostream>

std::string &ltrim(std::string &s, const std::string &chars = "\t\n\v\f\r ") {
    s.erase(0, s.find_first_not_of(chars));
    return s;
}
 
int main() {
  std::string s = "    c python c++ java php   ";

  ltrim(s);
  
  std::cout << s;
}




/*
run:

c python c++ java php

*/

 

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