How do retrieve the first word of a string in C++?
For example,
"abcde fghijk" I would like to retrieve abcde. Also what do I do to retrieve fghijk? Is there a convenient function for this or should I just code it?
- 1See stackoverflow.com/questions/236129/how-to-split-a-string-in-cIsmail Badawi– Ismail Badawi2011-06-12 00:43:41 +00:00Commented Jun 12, 2011 at 0:43
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3 Answers
Use split...
#include <boost/algorithm/string.hpp> std::vector<std::string> strs; boost::split(strs, "string to split", boost::is_any_of("\t ")); 
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Use stringstreams (<sstream> header)
std::string str ="abcde fghijk"; std::istringstream iss(str); std::string first, second; iss >> first >> second; 
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#include <iostream> #include <string> #include <sstream> #include <algorithm> #include <iterator> #include <vector> std::vector<std::string> get_words(std::string sentence) { std::stringstream ss(sentence); std::istream_iterator<std::string> begin(ss); std::istream_iterator<std::string> end; return std::vector<std::string>(begin, end); } int main() { std::string s = "abcde fghijk"; std::vector<std::string> vstrings = get_words(s); //the vector vstrings contains the words, now print them! std::copy(vstrings.begin(), vstrings.end(), std::ostream_iterator<std::string>(std::cout, "\n")); return 0; } Output:
abcde fghijk Online demo : http://ideone.com/9RjKw
