C++ splitlines

splitlines() is a built-in function in C++ that can be used to split a string into a vector of substrings based on a specified delimiter. This function is part of the standard library in C++, so no additional installation is required.

Syntax

The prototype of splitlines() is as follows:

vector<string> splitlines(string str, char delimiter = '\n');

The function takes in two parameters:

• str: The string to be split.
• delimiter: The delimiter to be used. By default, it is set to newline (\n).

The function returns a vector<string> that contains all the substrings split from the original string.

Example

Here is an example of how to use splitlines():

#include <iostream>
#include <vector>

using namespace std;

vector<string> splitlines(string str, char delimiter = '\n') {
    vector<string> result;
    string line;
    for (char c : str) {
        if (c == delimiter) {
            result.push_back(line);
            line = "";
        } else {
            line += c;
        }
    }
    if (line.length() > 0) {
        result.push_back(line);
    }
    return result;
}

int main() {
    string str = "Hello\nWorld\nHow are you?";
    vector<string> lines = splitlines(str);
    for (string line : lines) {
        cout << line << endl;
    }
    return 0;
}

The above code will output:

Hello
World
How are you?

In this example, we created our own implementation of splitlines() that splits the string based on the delimiter. We then used this function to split a string into separate lines and output each line on a new line.

Conclusion

splitlines() is a useful built-in function in C++ that makes it easy to split a string into substrings based on a delimiter. With this function, you can easily process and manipulate text data in your programs.