fork download
copy 
  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. /**
  6. Convert decimal number lying between 1-3999 to roman numerals
  7.  
  8. SYMBOL       VALUE
  9. I             1
  10. II			  2
  11. III			  3
  12. IV            4
  13. V             5
  14. X             10
  15. L             50
  16. C             100
  17. D             500
  18. M             1000     
  19. **/
  20. string roman(int n){
  21. 	string res  = "";
  22.  
  23. 	while(n > 0) {
  24. 		if(n >= 1000) {
  25. 			res = res + "M";
  26. 			n -= 1000;
  27. 		}
  28. 		else if(n >= 500) {
  29. 			res = res + "D";
  30. 			n -= 500;
  31. 		}
  32. 		else if(n >= 100) {
  33. 			res = res + "C";
  34. 			n -= 100;
  35. 		}
  36. 		else if(n >= 50) {
  37. 			res = res + "L";
  38. 			n -= 50;
  39. 		}
  40. 		else if(n >= 10) {
  41. 			res = res + "X";
  42. 			n -= 10;
  43. 		}
  44. 		else if(n >= 5) {
  45. 			res = res + "V";
  46. 			n -= 5;
  47. 		}
  48. 		else {
  49. 			res = res + "I";
  50. 			n--;
  51. 		}
  52. 	}
  53. 	return res;
  54. }
  55.  
  56. int main() {
  57. 	int intNum = 0;
  58. 	cin >> intNum;
  59. 	cout << roman(intNum);
  60. 	return 0;
  61. }
Success #stdin #stdout 0s 5300KB
comments (?)
stdin
copy 
90
stdout
copy 
LXXXX
https://ideone.com/5OkzX7
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!