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  1. #include<iostream>
  2. #include <cstring>
  3. #include<set>
  4. using namespace std;
  5.  
  6.  
  7.  
  8. int main(void) {
  9.  
  10. char str[100];
  11. cin >> str;
  12.  
  13. int n = strlen(str);
  14. set<char> s;
  15.  
  16. for(int i = 0; i < n; ++i){
  17. 	if(isdigit(str[i])){
  18. 		s.insert(str[i]);
  19. 	}
  20. }
  21.  
  22. cout << s.size();
  23.  
  24.  
  25.  
  26. return 0;
  27. }
Success #stdin #stdout 0.01s 5272KB
comments (?)
stdin
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123456Hello78
stdout
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8
https://ideone.com/dGznQZ
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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