Setting a string using cin then making the string into a list between spaces

[EthaOrigin]

So I set up a string like this:

string input
cin >> input

then I want to split that string into a list so that all the words in between spaces are entries in a list.

So if the string were "I like cats"
The list would have the first entry be "I" and the second entry would be "like" and so on.

How do I do this??

[hpmachining]

First off, you won't be able to get a string with spaces using std::cin like that. It will only get the first word. Instead use std::getline. Then one way to to get the individual words is with std::stringstream, which allows a string to be treated as a stream.

#include <iostream>
#include <string>
#include <sstream>
#include <vector>
 
int main(void)
{
  std::string input;
  std::getline(std::cin, input);
 
  std::stringstream inputStream(input);
  std::vector<std::string> words;
  std::string word; // temporary buffer to hold extracted word
  while (inputStream >> word)
    words.push_back(word);
 
  for (size_t i = 0; i < words.size(); ++i)
    std::cout << words[i] << std::endl;
 
  return 0;
}
 

I used a std::vector for the list, but if you actually want to use std::list, replace

#include <vector>

with

#include <list>

Replace

std::vector<std::string> words;

with

std::list<std::string> words;

And to iterate the list replace

for (size_t i = 0; i < words.size(); ++i)
    std::cout << words[i] << std::endl;

with

 for (auto it = words.begin(); it != words.end(); ++it)
    std::cout << *it << std::endl;