string split by space c++

To split a string by space in C++, you can use the std::istringstream class along with a std::vector to store the individual words. Here are the steps to split a string by space in C++:

1. Include the necessary headers:

#include <iostream>
#include <sstream>
#include <vector>

1. Declare a string variable to hold the input string:

std::string inputString = "Hello world! This is a sample string.";

1. Declare a std::istringstream object and initialize it with the input string:

std::istringstream iss(inputString);

1. Declare a std::vector to store the individual words:

std::vector<std::string> words;

1. Loop through the string using std::getline and extract each word:

std::string word;
while (iss >> word) {
    words.push_back(word);
}

Explanation: - In step 1, we include the necessary headers iostream, sstream, and vector for input/output, string stream, and vector respectively. - In step 2, we declare a string variable inputString and assign it a sample string. - In step 3, we declare a std::istringstream object iss and initialize it with the inputString. This allows us to treat the input string as a stream for extraction operations. - In step 4, we declare a std::vector named words to store the individual words from the input string. - In step 5, we use a while loop to extract each word from the input string using std::getline and store it in the word variable. The iss >> word syntax extracts a single word from the stream iss and returns true as long as there are more words to be extracted. We then push each word into the words vector using the push_back function.

After executing these steps, the words vector will contain all the individual words from the input string, split by space. You can then use this vector for further processing or display the individual words as needed.

Here is the complete code:

#include <iostream>
#include <sstream>
#include <vector>

int main() {
    std::string inputString = "Hello world! This is a sample string.";
    std::istringstream iss(inputString);
    std::vector<std::string> words;

    std::string word;
    while (iss >> word) {
        words.push_back(word);
    }

    // Display the individual words
    for (const auto& word : words) {
        std::cout << word << std::endl;
    }

    return 0;
}

Output:

Hello
world!
This
is
a
sample
string.

I hope this explanation helps! Let me know if you have any further questions.