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  1. #include <iostream>
  2. #include<string.h>
  3. #include<set>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	set<char>::iterator iter;
  8. 	char str[100];
  9. 	cin>>str;
  10. 	int n= strlen(str);
  11. 	set<char>s;
  12. 	for(int i=0;i<n;i++){
  13. 		if(isdigit(str[i])){
  14. 			s.insert(str[i]);
  15. 		}
  16. 	}
  17. 	cout<<s.size()<<endl;
  18. 	for(int i=0;i<n;i++){
  19. 		if(isdigit(str[i])){
  20. 			cout<<str[i]<<" ";
  21. 		}
  22. 	}
  23.  
  24. 	return 0;
  25. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
er5tgg87555
stdout 
3
5 8 7 5 5 5
https://ideone.com/R5uBcH
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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