#s/iostream.h/IOSTREAM_HEADER/g
#s/ostream\([* ]\)/std::ostream\1/g
#s/istream\([* ]\)/std::istream\1/g
#s/cin/std::cin/g
#s/cout/std::cout/g
#s/cerr/std::cerr/g
#s/\(using[ ]namespace\)/\/\/\1/
#s/<FlexLexer.h>/"FlexLexer.h"/g
#s/lex.stm.cc/scanner.cpp/g
#s/IOSTREAM_HEADER/iostream/g
s/\(int yyFlexLexer::yywrap\)/\/\/\1/g