library?

Question

does this mean there are many other library in<iostrean> and <string> is one of them... and can we make our own library?

Answer 1

Yes you can, but not on SL code playground.

You would typically create a .h file, say, myheader.h. And in your source code you would #include "myheader.h" Note that you need double quotes when you include your own header files, as opposed to <>'s for standard libraries.