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The most elegant way to iterate the words of a C/C++ string
There is no one elegant way to iterate the words of a C/C++ string. The most readable way could be termed as the most elegant for some while the most performant for others. I've listed 2 methods that you can use to achieve this. First way is using a stringstream to read words seperated by spaces. This is a little limited but does the task fairly well if you provide the proper checks.
example
#include <vector> #include <string> #include <sstream> using namespace std; int main() { string str("Hello from the dark side"); string tmp; // A string to store the word on each iteration. stringstream str_strm(str); vector<string> words; // Create vector to hold our words while (str_strm >> tmp) { // Provide proper checks here for tmp like if empty // Also strip down symbols like !, ., ?, etc. // Finally push it. words.push_back(tmp); } }
Another way is to provide a custom delimiter to split the string by using the getline function −
example
#include <vector> #include <string> #include <sstream> using namespace std; int main() { std::stringstream str_strm("Hello from the dark side"); std::string tmp; vector<string> words; char delim = ' '; // Ddefine the delimiter to split by while (std::getline(str_strm, tmp, delim)) { // Provide proper checks here for tmp like if empty // Also strip down symbols like !, ., ?, etc. // Finally push it. words.push_back(tmp); } }
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