#include "bip21.hpp" using namespace sk::bip21; auto main() -> int { // Decoding  std::string s{"bitcoin:1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH"}; auto [res, err] = decode(s); std::cout << res; // Encoding  Component c = { {"amount", "0.23"}, {"label", "foobar"}, {"message", "donation"} }; const auto encoded = encode("1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH", std::nullopt, c); std::cout << encoded; // bitcoin:1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH?amount=0.23&label=foobar&message=donation }