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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a, b, sum=0, n, i;
  5. 	scanf("%d", &n);
  6. 	a=n;
  7.  
  8. 	do{
  9. 		sum=0;
  10. 		for(i=10; i<=a*10 ;i*=10){
  11. 		b=a%i;
  12. 		b=b*10/i;
  13. 		printf("#%d", b);
  14. 		sum=sum+b*b;
  15. 		printf("#%d", sum);
  16. 		}
  17. 		a=sum;
  18. 		if(sum==n){
  19. 			break;
  20. 		}
  21. 		else if(sum==1){
  22. 			break;
  23. 		}
  24. 		else{
  25. 			a=sum;
  26. 		}
  27. 		}while(1);
  28.  
  29. 	if(sum==n){
  30. 		printf("#%dは案ラッキーナンバーです。", n);
  31. 	}
  32. 	else{
  33. 		printf("#%dはラッキーナンバーです。", n);
  34. 	}
  35.  
  36. 	return 0;
  37. }
  38.  
Success #stdin #stdout 0s 5316KB
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19
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#9#81#1#82#2#4#8#68#8#64#6#100#0#0#0#0#1#1#19はラッキーナンバーです。
https://ideone.com/YyF1Iz
language:
C99 (gcc 8.3)
created:
6 days ago
visibility:
public

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