fizz-buzz

Exercise to practice building projects with CMake.

Background

Inspired by a Project Euler exercise and based on the popular game and popular programming job interview question where you have to say/print "Fizz" if a natural number is divisible by 3 and "Buzz" if it is divisible by 5:

1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
Fizz Buzz
...

We wish to build a code which computes the "Fizz-buzz sum" for a given natural number N, summing all natural numbers <= N which are multiples of 3 or 5. For N=10 the sum is 3+5+6+9+10 = 33.

The source code and unit tests are there:

$ ./bin/fb.x

Fizz-buzz sum for integer 10 is 33
Fizz-buzz sum for integer 100 is 2418

$ ./bin/unit_tests

[==========] Running 2 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 2 tests from fizz_buzz
[ RUN      ] fizz_buzz.sum_small_number
[       OK ] fizz_buzz.sum_small_number (0 ms)
[ RUN      ] fizz_buzz.sum_larger_number
[       OK ] fizz_buzz.sum_larger_number (0 ms)
[----------] 2 tests from fizz_buzz (0 ms total)

[----------] Global test environment tear-down
[==========] 2 tests from 1 test case ran. (0 ms total)
[  PASSED  ] 2 tests.

Tasks

• Build a shared library.
• Build and link the main program.
• Build the unit tests and link against Google Test.
• Define a version number inside CMake and print it to the output of the executable.
• Print the Git hash to the output of the executable.
• Create an installer so the program can be installed properly (GNU standards).