在C++中替换字符串中出现的所有子字符串

#include <iostream>
#include <string>

std::string replaceAll(const std::string& str, const std::string& from, const std::string& to) {
    std::string result = str;
    size_t start_pos = 0;
    while((start_pos = result.find(from, start_pos)) != std::string::npos) {
        result.replace(start_pos, from.length(), to);
        start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with 'yx'
    }
    return result;
}

int main() {
    std::string text = "Hello world, world is beautiful.";
    std::string from = "world";
    std::string to = "universe";

    std::string replacedText = replaceAll(text, from, to);
    std::cout << "Original text: " << text << std::endl;
    std::cout << "Replaced text: " << replacedText << std::endl;

    return 0;
}