Assembly Language Reimagined: Programming the Intel x64 Microprocessor in Linux

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2025

J. SchwartzmanAssembly Language Reimaginedhttps://doi.org/10.1007/979-8-8688-1724-3_10

10. The hhmmss Utility Program

John Schwartzman¹  

(1)

Ellicott City, MD, USA

 

The hhmmss utility program displays a long integer, number of Seconds, in hhmmss string format. It can display a maximum value of 99:59:59. Table 10-1 shows the algorithm and Listing 10-2 shows the c calling program.

Table 10-1

The hhmmss Algorithm

Division	Action
number of Seconds / 60 * 60	write 2 digits of quotient followed by a colon (hours)
remainder / 60	write 2 digits of quotient followed by a colon (minutes)
remainder	write 2 digits of quotient (seconds)

/////////////////////////////////////////////////////////////////////////// ...