rounding_integer_division

Rounding Integer Division

AKA: performing rounding of the result of division during integer division.

Integer division in C or C++ usually just truncates the part after the decimal in order to store the result into an integer. However, using a little bit of trickery, it's actually possible to round up, round down, or round to the nearest integer during integer division. This project shows how!

Note that doing this for positive-only integer inputs is far easier to understand conceptually than handling negative inputs too, but this project handles both by making use of the ternary operator (test ? do_if_true : do_if_false).

Read more here: https://stackoverflow.com/questions/2422712/rounding-integer-division-instead-of-truncating/58568736#58568736

Run command:

./run_tests.sh

Description of Files:

1. rounding_integer_division.cpp = the main file, to be compiled and run as C code OR as C++ code
2. rounding_integer_division.c = a symbolic link to the main file so that it can be compiled and run in C too, since C expects files to end in .c.
3. rounding_integer_division.md = the answer/description I'm drafting for my Stack Overflow answer here, too.
4. run_tests.sh = the Bash shell script to run to test all of this code. Run it with ./run_tests.sh while in this directory.
5. run_tests_sample_output.txt = copy/pasted sample output from running the test script above