Did the code of c++ in sololearn of mobile version is useful in programming at laptops or desktops

Answer 1

Programs that you create here in code playground perfectly abide by the latest standards of C++, which means they should definately run on any standard compiler on any machine. If your program written on sololearn code playground does not run on your computer then it means that either you are not compiling them correctly or you are using old dos based compiler/IDE (eg. turbo c++)