say: in progress

cpp/say/say.cpp

@@ -0,0 +1,85 @@
+#include "say.h"
+
+#include <unordered_map>
+
+#include <iostream>
+
+namespace say {
+
+using namespace std;
+
+namespace {
+
+const unordered_map<number_t, string> numbers_map = {
+        {0, "zero"},
+        {1, "one"},
+        {2, "two"},
+        {3, "three"},
+        {4, "four"},
+        {5, "five"},
+        {6, "six"},
+        {7, "seven"},
+        {8, "eight"},
+        {9, "nine"},
+        {10, "ten"},
+        {11, "eleven"},
+        {12, "twelve"},
+        {13, "thirteen"},
+        {20, "twenty"},
+        {30, "thirty"},
+        {50, "fifty"},
+        {80, "eighty"}
+    };
+}
+
+
+string in_english(number_t number)
+{
+    if (number > 13 && number < 20)
+        return numbers_map.at(number - 10) + "teen";
+
+    if (number >= 20 && number < 100 && (number % 10 == 0)) {
+
+        if (numbers_map.count(number))
+            return numbers_map.at(number);
+
+        return numbers_map.at(number / 10) + "ty";
+    }
+
+    if (number > 20 && number < 100) {
+
+        number_t ones = number % 10;
+        number_t tens = number - ones;
+
+        return in_english(tens) + '-' + in_english(ones);
+    }
+
+    if (number >= 100 && number < 1000) {
+
+        if (number % 100 == 0)
+            return in_english(number / 100) + " hundred";
+
+        number_t rest     = number % 100;
+        number_t hundreds = number - rest;
+
+        return in_english(hundreds) + ' ' + in_english(rest);
+    }
+
+    if (number >= 1000 && number < 1000000) {
+
+        cout << number << endl;
+
+        if (number % 1000 == 0)
+            return in_english(number / 1000) + " thousand";
+
+        number_t rest      = number % 1000;
+        number_t thousands = number - rest;
+
+        return in_english(thousands) + ' ' + in_english(rest);
+    }
+
+    return numbers_map.at(number);
+}
+
+
+}

cpp/say/say.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#define EXERCISM_RUN_ALL_TESTS
+
+#include <string>
+
+namespace say {
+
+typedef unsigned long long number_t;
+
+std::string in_english(number_t number);
+
+}