Codeforces 102B. Sum of Digits Solution

1. Solution IN c++:
2. 
   
3. ///**********ALLAH IS ALMIGHTY************///
4. ///AH Tonmoy
5. ///Department of CSE,23rd batch
6. ///Islamic University,Bangladesh
7. #include<bits/stdc++.h>
8. using namespace std;
9. int main()
10. {
11. int sum = 0,i,c=0;
12. string s;
13. cin>>s;
14. {
15. c=0;
16. while(s.length()>1)
17. {
18. sum=0;
19. for(i=0; i<s.length(); i++)
20. {
21. sum=sum+(s[i]-'0');
22. }
23. s=to_string(sum);
24. c++;
25. }
26. cout<<c<<endl;
27. }
28.  
29. }