Extended Data Formatting Using S oGlenn

The ANSI-C Standard de nes Stdio as the I/O library for C programs. Despite its ubiquitous use, Stdio has well-documented de ciencies in various areas including data formatting. The S o library provides an alternative to Stdio with improved functionality, robustness and performance. In particular, S o extends the data formatting functions so that applications can deal with arbitrary scalar objects, avoid unsafe operations and even de ne their own conversion patterns. This paper discusses these formatting enhancements.