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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a,b,n,sum=0;
  5. 	scanf("%d",&n);
  6. 	a=n;
  7. 	while(a!=sum){
  8. 		sum=0;
  9. 		while(n!=0){
  10. 			b=n%10;
  11. 			n=n/10;
  12. 			sum=sum+b*b;
  13. 			}
  14. 			if(sum==1){
  15. 				printf("ラッキーナンバー");
  16. 				break;
  17. 				}
  18. 		n=sum;
  19.  
  20. 	}
  21. 	if(sum!=1){
  22. 		printf("ラッキーナンバーでない");
  23. 	}
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
19
stdout 
ラッキーナンバー
https://ideone.com/9mdX4n
課題３
language:
C99 (gcc 8.3)
created:
212 days ago
visibility:
public

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