foo.cc: In function 'int main()':
foo.cc:10:2: error: expected ';' before 'if'
  if ( i < 60 ) res ++ ;
  ^~
foo.cc:12:6: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
  cout++;
  ~~~~^~
foo.cc:16:6: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
  cout++; 
  ~~~~^~
foo.cc:20:8: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
    cout++;
    ~~~~^~

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