fork download
copy 
  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n,a,sum=0;
  5. 	scanf("%d",&n);
  6. 	a=n;
  7. 	for(a=0;a<=100;a++){
  8. 		while(n!=0){
  9. 			n=n%10;
  10. 			a=a/10;
  11. 			sum=sum+n*n;
  12. 				n=a;
  13. 			}
  14. 		if(sum==1)break;
  15. 		n=sum;
  16. 		a=n;
  17.  
  18. 		}
  19. 	printf("%d",sum);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
19
stdout
copy 
146
https://ideone.com/Y6c369
language:
C99 (gcc 8.3)
created:
22 hours 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!