Question

How to split the words of a string into a vector in C++

Answer 1

#include <iostream>
#include <string>
#include <sstream>
#include <iterator>
#include <vector>
 
using std::cout;
using std::endl;
using std::string;
using std::vector;
 
int main()
{
    string s = "c c++ java php python go rust swift";
 
    std::istringstream iss(s);
    vector<string> tokens{ std::istream_iterator<string>{iss},
                           std::istream_iterator<string>{} };
 
    for (string s : tokens) {
        cout << s << endl;
    }
}


 
/*
run:
 
c
c++
java
php
python
go
rust
swift
 
*/

 

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Answer 2

#include <iostream>
#include <string>
#include <sstream>
#include <iterator>
#include <vector>
 
template <typename Out>
void split(const std::string &s, char delimiter, Out result) {
    std::istringstream iss(s);
    std::string item;
    
    while (std::getline(iss, item, delimiter)) {
        *result++ = item;
    }
}

std::vector<std::string> split(const std::string &s, char delimiter) {
    std::vector<std::string> tokens;
    split(s, delimiter, std::back_inserter(tokens));
    
    return tokens;
}
 
int main()
{
    std::string s = "c c++ java php python go rust swift";
    
    std::vector<std::string> tokens = split(s, ' ');
 
    for (std::string s : tokens) {
        std::cout << s << std::endl;
    }
}
 
 
/*
run:
 
c
c++
java
php
python
go
rust
swift
 
*/

 

70+ SQL courses for beginners and professionals

Answer 3

#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <iterator>

int main() {
    std::string s = "c c++ java php python go rust swift";
    std::istringstream iss(s);
    
    std::vector<std::string> tokens;
    
    copy(std::istream_iterator<std::string>(iss),
        std::istream_iterator<std::string>(),
        std::back_inserter(tokens));
        
    for (std::string s : tokens) {
        std::cout << s << std::endl;
    }
}

 
 
/*
run:
 
c
c++
java
php
python
go
rust
swift
 
*/

 

70+ SQL courses for beginners and professionals