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  1. #include <unordered_map>
  2. #include <string>
  3. #include <iostream>
  4.  
  5. int main () {
  6.   using std::unordered_map;
  7.   using std::string;
  8.  
  9.     unordered_map<string, int> employeeTable;
  10.     unordered_map<string, int>::iterator it;
  11.  
  12.     employeeTable["hello"] = 4;
  13.     employeeTable["goodbye"] = 2;
  14.     employeeTable["Hello, again"] = 27;
  15.  
  16.     std::cout << employeeTable.size() << "\n";
  17.  
  18.     for (it = employeeTable.begin(); it != employeeTable.end();) {
  19.        int age = it->second;
  20.        if (age < 18) {
  21.           employeeTable.erase(it++); // <== FAILS HERE!!!!!!
  22.        } else {
  23.           ++it;
  24.        }
  25.     }
  26.  
  27.     std::cout << employeeTable.size() << "\n";
  28.  
  29. }
  30.  
  31.  
Success #stdin #stdout 0s 3020KB
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https://ideone.com/TYfeh
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
secret

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