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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. vector<string> under20 = {"Zero", "One", "Two", "Three", "Four", "Five", 
  6. 		"Six", "Seven", "Eight", "Nine", "Ten",
  7. 		"Eleven","Twelve", "Thirteen", "Fourteen", "Fifteen",
  8. 		"Sixteen", "Seventeen", "Eighteen", "Nineteen", "Twenty"};
  9.  
  10. vector<string> tens = {"Zero", "Ten", "Twenty", "Thirty", "Forty", "Fifty", 
  11. 		"Sixty", "Seventy", "Eighty", "Ninety"};
  12.  
  13. string numBelow1000(int num) {
  14. 	if(num == 0) return under20[0];
  15. 	string ret = "";
  16. 	if (num > 100) {
  17. 		ret = under20[num/100] + " Hundred";
  18. 		num %= 100;
  19. 		if (num == 0) {
  20. 			return ret;
  21. 		} else {
  22. 			ret += " and ";
  23. 		} 
  24. 	}
  25.  
  26. 	if (num <= 20) {
  27. 		ret += under20[num];
  28. 	} else {
  29. 		ret += tens[num/10];
  30. 		num %= 10;
  31. 		if (num > 0)
  32. 			ret += " " + under20[num];
  33. 	}
  34. 	return ret;
  35. }
  36.  
  37. string num2string(int num) {
  38. 	int part1 = num / 1000;
  39. 	int part2 = num % 1000;
  40. 	string res;
  41. 	if(part1) {
  42. 		res = numBelow1000(part1) + " Thousand";
  43. 		if(part2) res += ", " + numBelow1000(part2);
  44. 	} else {
  45. 		res = numBelow1000(part2);
  46. 	}
  47. 	return res;
  48. }
  49.  
  50. int main() {
  51. 	int num = 0;
  52. 	cin >> num;
  53. 	string rs = num2string(num);
  54. 	cout<<rs<<endl;
  55. 	return 0;
  56. }
Success #stdin #stdout 0s 3280KB
comments (?)
stdin 
4618
stdout 
Four Thousand, Six Hundred and Eighteen
https://ideone.com/Q1AT1p
Facebook Interview - Integer to English Phrase
Given an integer between 0 and 999,999, print an English phrase that describes the integer (eg, “One Thousand, Two Hundred and Thirty Four”)
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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