//If id is not already in symbol table, insert. Return pointer to symbol table entry
void* installID();
//Parse integer from code at yytext
void* parseNum();
//Parse float from code at yytext
void* parseReal();
//Called at end of parsing
int yywrap();
//Used for searching table
int cmp_string( const void *a, const void *b);

int main();
int num_lines;