Hi, On Fri, Nov 27, 2009 at 4:03 PM, Vadim Lebedev <vadim at mbdsys.com> wrote: > What is this: "%30" SCNd64 ? It's a MACRO defined in inttypes.h and is used in scans function (SCN) for type int64_t (d64). To write a int64_t you can use the macro PRId64, e.g. printf("%"PRId64, value); Greets! -- Giuseppe Sucameli