is it related to functions in c language
2007-11-24 02:23:30 · 2 answers · asked by pok 1 in Science & Mathematics ➔ Engineering
A subroutine is a useful piece of code that performs a function that could be needed many places in a program. An example would be code that converts a Fahrenheit temperature reading to Celsius. A program that works a lot with temperatures would call that subroutine many times instead of having to take space to put the code inline everywhere it is needed. The advantage is you write it once and if if you find an error you only need to fix it at one location plus it can save a lot of memory by appearing only one time in the porgram.
Diagnostic subroutines are ones that run useful tests on the hardware and the operating system. In safety applications a PROM checksum routine is run at startup and periodically during operation to ensue program has not been corrupted. Other diagnostic ones could run a memory pattern on RAM or verify that the operating system is not stuck in a loop.
2007-11-24 02:43:01 · answer #1 · answered by Rich Z 7 · 1⤊ 1⤋
rich z answer is perfect-what more could i say-give him a thumb up
2007-11-24 03:15:58 · answer #2 · answered by jamus d woespuss 4 · 0⤊ 0⤋