c++ 문자열을 배열로 변환(explode) 방법

php 의 explode 와 같이 문자열을 특정 구분자로 배열로 변환해 보겠습니다.

#include <iostream>
#include <stdio.h>
#include <cstdlib>
 
#include <iostream>
#include <stdexcept>
#include <string>
 
#include <vector>
#include <sstream>
#include <utility>
 
std::string exec(const char* cmd) {
    char buffer[128];
    std::string result = "";
    FILE* pipe = popen(cmd, "r");
    if (!pipe) throw std::runtime_error("popen() failed!");
    try {
        while (fgets(buffer, sizeof buffer, pipe) != NULL) {
            result += buffer;
        }
    } catch (...) {
        pclose(pipe);
        throw;
    }
    pclose(pipe);
    return result;
}
 
template <typename Out>
void split(const std::string &s, char delim, Out result) {
    std::istringstream iss(s);
    std::string item;
    while (std::getline(iss, item, delim)) {
        *result++ = item;
    }
}
 
std::vector<std::string> split(const std::string &s, char delim) {
    std::vector<std::string> elems;
    split(s, delim, std::back_inserter(elems));
    return elems;
}
 
int main()
{
 
   std::vector<std::string> x = split("one:two::three", ':');
 
   for(int i=0; i<x.size(); i++) {
      std::cout << x[i] << std::endl;
   }
}

result

$ ./cpp              
one
two
 
three

 

참고

https://stackoverflow.com/questions/236129/how-do-i-iterate-over-the-words-of-a-string

How do I iterate over the words of a string?