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_13

13. Sorting an Array of Strings

John Schwartzman¹  

(1)

Ellicott City, MD, USA

 

It’s time to spread your wings a little bit. We’re now going to sort an array of C strings. These are ASCIIZ character representations of C text strings. Whereas an integer takes up a single qbyte (8-bytes or 64 bits) of memory, each C string takes up one byte for each character of the string, followed by a single byte containing zero as a delimiter. A 64-byte string can hold 63 characters plus the ending zero byte. So, it takes 512 bytes of memory (64 * 8) to hold a 64-character C string.

Figure ...