foo.cc:2:20: error: expected ';' before 'int'
    2 | using namespace std
      |                    ^
      |                    ;
    3 | 
    4 | int main()
      | ~~~                 
foo.cc: In function 'int main()':
foo.cc:7:30: error: expected ';' before '<' token
    7 |                 for(int i=4,i<20190324,i++)
      |                              ^
      |                              ;
foo.cc:7:30: error: expected primary-expression before '<' token
foo.cc:7:43: error: expected ';' before ')' token
    7 |                 for(int i=4,i<20190324,i++)
      |                                           ^
      |                                           ;

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