Add Fizz Buzz in OCaml (#4340)

Author: Kaamkiya

archive/o/ocaml/fizz-buzz.ml

@@ -0,0 +1,13 @@
+let fizzbuzz i =
+  if i mod 15 == 0
+  then "FizzBuzz"
+  else if i mod 5 == 0
+  then "Buzz"
+  else if i mod 3 == 0
+  then "Fizz"
+  else string_of_int i
+;;
+
+for i = 1 to 100 do
+  print_string (fizzbuzz(i) ^ "\n")
+done;;