How to Split a C++ String into a Vector of Substrings? Last Updated : 01 Mar, 2024 Comments Improve Suggest changes Like Article Like Report In C++, splitting a string into a vector of substrings means we have to split the given string into a substring based on a given delimiter and store each substring in a vector. In this article, we will learn how to split a string into a vector of substrings in C++. Example: Input: str= "Hello, I am Geek from Geeksforgeeks "Delimiter= ' 'Output:Hello,IamGeekfromGeeksforgeeksSplit an std::string into a Vector of Strings in C++To split a std::string into a std::vector of substrings use the stringstream with a combination of std::string::getline. The below steps shows how to do that: ApproachCreate an input string stream from the input string using the stringstream.Iterate through the stream, using getline to extract the substring using the delimiter.Add the extracted substring to the vector.Print the vector of substrings.C++ Program to Split a String into Vector of SubstringsThe below example demonstrates how we can split a given string into a vector of substrings in C++. C++ // C++ Program to illustrate how to split a string to vector // of substring #include <iostream> #include <iterator> #include <sstream> #include <string> #include <vector> using namespace std; // Function to split a string into tokens based on a // delimiter vector<string> splitString(string& input, char delimiter) { // Creating an input string stream from the input string istringstream stream(input); // Vector to store the tokens vector<string> tokens; // Temporary string to store each token string token; // Read tokens from the string stream separated by the // delimiter while (getline(stream, token, delimiter)) { // Add the token to the vector of tokens tokens.push_back(token); } // Return the vector of tokens return tokens; } int main() { // Input string string input = "Hello, I am Geek from Geeksforgeeks"; // Delimiter char delimiter = ' '; // calling the function to Split the input string into // vector of substring vector<string> vecOfSubStr = splitString(input, delimiter); // Print the vector of substrings for (auto& it : vecOfSubStr) { cout << it << endl; } return 0; } OutputHello, I am Geek from Geeksforgeeks Time complexity: O(n), here n is the length of the input string.Auxilliary Space: O(n) Comment More infoAdvertise with us Next Article How to Split a C++ String into a Vector of Substrings? 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