challenge 2015

int_to_word.h

@@ -0,0 +1,145 @@
+#pragma once
+#include <string>
+using namespace std;
+
+string int_to_word(int n) {
+	int divisor = 100000000, dd = 0, temp = 0;
+	bool t, m;
+	t = false;
+	m = false;
+	string word;
+	if (n == 0)
+		word = "zero";
+	else
+	{
+		if (n < 0) {
+			n *= -1;
+			word += "negative ";
+		}
+		for (int i = 1; i <= 3; i++)
+		{
+			if ((n / 1000000) > 0 && i == 1)
+				m = true;
+			else if ((n / 1000) > 0 && i == 2)
+				t = true;
+			for (int j = 1; j <= 3; j++)
+			{
+				switch (n / divisor)
+				{
+				case 1:
+					if (j % 2 == 0)
+					{
+						dd = divisor / 10;
+						temp = n / dd;
+						if ((temp % 10) > 0)
+						{
+							switch (temp % 10)
+							{
+							case 1:
+								word += "eleven ";
+								break;
+							case 2:
+								word += "twelve ";
+								break;
+							case 3:
+								word += "thirteen ";
+								break;
+							case 4:
+								word += "fourteen ";
+								break;
+							case 5:
+								word += "fifteen ";
+								break;
+							case 6:
+								word += "sixteen ";
+								break;
+							case 7:
+								word += "seventeen ";
+								break;
+							case 8:
+								word += "eighteen ";
+								break;
+							case 9:
+								word += "nineteen ";
+								break;
+							}
+
+						}
+						else {
+							word += "ten ";
+						}
+						j++;
+						n %= divisor;
+						divisor /= 10;
+					}
+					else
+						word += "one ";
+					break;
+				case 2:
+					if (j % 2 == 0)
+						word += "twenty ";
+					else
+						word += "two ";
+					break;
+				case 3:
+					if (j % 2 == 0)
+						word += "thirty ";
+					else
+						word += "three ";
+					break;
+				case 4:
+					if (j % 2 == 0)
+						word += "fourty ";
+					else
+						word += "four ";
+					break;
+				case 5:
+					if (j % 2 == 0)
+						word += "fifty ";
+					else
+						word += "five ";
+					break;
+				case 6:
+					if (j % 2 == 0)
+						word += "sixty ";
+					else
+						word += "six ";
+					break;
+				case 7:
+					if (j % 2 == 0)
+						word += "seventy ";
+					else
+						word += "seven ";
+					break;
+				case 8:
+					if (j % 2 == 0)
+						word += "eighty ";
+					else
+						word += "eight ";
+					break;
+				case 9:
+					if (j % 2 == 0)
+						word += "ninety ";
+					else
+						word += "nine ";
+					break;
+				}//end switch
+				if (j == 1 && (n / divisor) != 0)
+					word += "hundred ";
+				n %= divisor;
+				divisor /= 10;
+			}//end j for
+			if (m && (i == 1)) {
+				word += "million ";
+				m = false;
+			}
+
+			if (t && (i == 2)) {
+				word += "thousand ";
+				t = false;
+			}
+		}//end i for
+	}
+	word.erase(word.end() - 1);
+	return word;
+}