/in/foo.cc: In function 'int main()':
/in/foo.cc:5:16: error: expected initializer before 'input'
    5 |     int string input;
      |                ^~~~~
/in/foo.cc:6:22: error: 'input' was not declared in this scope; did you mean 'int'?
    6 |     int getline(cin, input);
      |                      ^~~~~
      |                      int
/in/foo.cc:6:27: error: expression list treated as compound expression in initializer [-fpermissive]
    6 |     int getline(cin, input);
      |                           ^
/in/foo.cc:10:12: error: 'iss' was not declared in this scope
   10 |     while (iss >> word) {
      |            ^~~
/in/foo.cc:10:19: error: 'word' was not declared in this scope
   10 |     while (iss >> word) {
      |                   ^~~~
/in/foo.cc:11:9: error: 'words' was not declared in this scope
   11 |         words.push_back(word);
      |         ^~~~~
/in/foo.cc:13:19: error: expected initializer before '<' token
   13 |         int vector<string> words;
      |                   ^
/in/foo.cc:14:23: error: expected initializer before 'iss'
   14 |     int istringstream iss(input);
      |                       ^~~
/in/foo.cc:15:16: error: expected initializer before 'word'
   15 |     int string word;
      |                ^~~~
/in/foo.cc:16:18: error: 'words' was not declared in this scope
   16 |     for (int i = words.size() - 1; i >= 0; --i) {
      |                  ^~~~~
/in/foo.cc:23:17: error: expected ';' before 'return'
   23 |     cout << endl
      |                 ^
      |                 ;
   24 |     return 0;
      |     ~~~~~~       
/in/foo.cc:6:9: warning: unused variable 'getline' [-Wunused-variable]
    6 |     int getline(cin, input);
      |         ^~~~~~~