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  1. #include <stdio.h>
  2.  
  3. int isPal(int n)
  4. {
  5. 	int r=0,nn=n;
  6. 	if (n < 10) return 1;
  7. 	while(nn>0)
  8. 	{
  9. 		r=r*10+nn%10;
  10. 		nn=nn/10;
  11. 	}
  12. 	return (n==r);
  13. }
  14. int main(void) {
  15. 	// your code goes here
  16. 	int i,X,c=0;
  17. 	scanf("%d",&X);
  18. 	for (i=1; i<=X; i++) if (isPal(i)) c++;
  19. 	printf("%d\n",c);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 9424KB
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https://ideone.com/lfZjj9
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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