the used memory is static, but will be overwritten by later calls,
so if you want to save the result, copy it to a private string buffer;
there can be 10 local calls of int2str() without buffering the result --
the used memory is static, but will be overwritten by later calls,
so if you want to save the result, copy it to a private string buffer;
there can be 10 local calls of int2str() without buffering the result --