#include <stdio.h>

struct table;

/* returns an empty table */
struct table * initTable ( );

/* returns the result of adding a definition for the given symbol
   in the line with the given number to the table */
struct table * addDef (char * symbol, int lineNum, struct table * symbols);

/* returns the result of adding a use of the given table in the line
   with the given number to the table */
struct table * addUse (char * symbol, int lineNum, struct table * symbols);

/* print the table, in the format described above, to the given file */
void printTable (struct table * symbols, FILE * out);