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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. void say(vector<string> _vec, string prefix = "") {
  7. 	cout << prefix;
  8. 	if (!prefix.empty()) cout << " ";
  9. 	cout << "vector<string> =";
  10. 	for (auto & i : _vec) { cout << " " << i; }
  11. 	cout << endl;
  12. }
  13.  
  14.  
  15. int main() {
  16. 	vector<string> foo{"a", "b", "c", "d", "e"};
  17. 	say(foo);
  18. 	cout << *(foo.begin());
  19. 	cout << *(foo.end()-1);
  20. 	cout << endl;	
  21.  
  22.     foo.erase(foo.begin()+1);
  23.     say(foo);
  24.  
  25.     vector<string> mappings_{"a", "b", "c", "d", "e"};
  26.     auto it = mappings_.begin();
  27.     while ( it != mappings_.end() ) {
  28.         auto map = *it;
  29.         if ( map == "b" || map == "c" || map == "d" ) {
  30.             it = mappings_.erase(it);
  31.             cout << "mappings: "; for (auto & m : mappings_) { cout << m; } cout << endl;
  32.         } else {
  33.             ++it;
  34.         }
  35.     }
  36.     say(mappings_, "mappings");
  37.  
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 4264KB
comments (?)
stdin
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Standard input is empty
stdout
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vector<string> = a b c d e
ae
vector<string> = a c d e
mappings: acde
mappings: ade
mappings: ae
mappings vector<string> = a e
https://ideone.com/9CqcCg
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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