我想拆分字符串而不创建两个字符串

#include <iostream>
#include <string>

void splitString(const std::string& str, char delimiter) {
    std::string::size_type start = 0;
    std::string::size_type end = str.find(delimiter);

    while (end != std::string::npos) {
        std::string substr = str.substr(start, end - start);
        std::cout << substr << std::endl;
        start = end + 1;
        end = str.find(delimiter, start);
    }

    std::string substr = str.substr(start);
    std::cout << substr << std::endl;
}

int main() {
    std::string str = "I want to split this string";
    char delimiter = ' ';

    splitString(str, delimiter);

    return 0;
}