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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_08_06
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8n06094a
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1990-03-18
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/*
* MDB.H (Generalized Static/Dynamic Array Version)
*
* Program: Mini-Database
* Written by: Leor Zolman
* Module: Program Header File
*/
#define TRUE 1
#define FALSE 0
/*
* Prototypes:
*/
int do_menu(struct menu_item *mnu, char *title);
void write_db(char *filename);
int read_db(char *filename);
void edit_db(char *db_name);
void backup_db(void);
void error(char *msg);
struct record *alloc_rec(void);
void free_up(void);
/*
* Data Definitions:
*/
struct record { /* Database record definition */
char active; /* TRUE if Active, else FALSE */
char last[25], first[15];/* Name */
long id; /* ID Number */
int age; /* Age */
char gender; /* M or F */
float salary; /* Annual Salary */
};
#define MAX_RECS 1000 /* Maximum number of records */
#ifdef MAIN_MODULE /* Make sure data is only */
#define EXTERN /* DEFINED in the main module, */
#else /* and declared as EXTERNAL in */
#define EXTERN extern /* the other modules. */
#endif
EXTERN struct record *recs[MAX_RECS]; /* Array of ptr */
#define RECS recs /* to struct of type record */
EXTERN int n_recs; /* # of records in current db */
EXTERN int max_recs; /* Max # of recs allowed */
struct menu_item { /* Menu definition record */
int action_code; /* Menu item code */
char *descrip; /* Menu item text */
};