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  1. #include <iostream>
  2. #include <cstring>
  3. #include <set>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	set<char> k;
  8. 	set<char>::iterator iter;
  9. 	char s[101];
  10. 	cin >> s;
  11. 	for(int i = 0; i < strlen(s); i++){
  12. 		k.insert(s[i]);
  13. 	}
  14. 	cout << k.size();
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 4192KB
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6
https://ideone.com/r2tHD8
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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