unsigned char str[]{3,4,5,6,0}; std::stringstream ss; ss << "str=" << str; std::string text = ss.str(); > The content of text will be "str=♥♦♣♠".

unsigned char str[]{3,4,5,6,0}; std::stringstream ss; ss << "str=" << str; std::string text = ss.str(); > The content of text will be "str=♥♦♣♠". no, it wont. if you are on an old Windows with code page 437 then sure. but on any sane UTF-8 system, you're just going to get some binary data. 1. https://wikipedia.org/wiki/Code_page_437 https://wikipedia.org/wiki/Code_page_437