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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <stack>
  4. using namespace std;
  5.  
  6. int main() {
  7. string s;
  8. stack<int> hi;
  9. while(cin>> s) {
  10. 	if(s=="push"){
  11. 	int n;
  12. 	cin>> n;
  13. 	hi.push(n);
  14. 	cout<< "ok" << endl;
  15. 	}
  16. 	if(s == "pop"){
  17. 	cout<<hi.top()<< endl;
  18. 	hi.pop();
  19. 	}
  20. 	if(s == "back"){
  21. 	cout<<hi.top()<< endl;
  22. 	}
  23. 	if(s == "size"){
  24. 	cout<< hi.size()<< endl;
  25. 	}
  26. 	if(s == "clear"){
  27. 	while(!hi.empty()) {
  28. 	hi.pop();
  29. 	cout<< "ok"<< endl;
  30. 	}
  31. 	}
  32. 	if(s == "exit"){
  33. 		cout << "bye" << endl;
  34. 	}
  35. }
  36. return 0;
  37. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
copy 
push 1
back
exit
stdout
copy 
ok
1
bye
https://ideone.com/4Zd4n6
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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