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/********************************************************
* Database -- A very simple database program to *
* lookup names in a hardcoded list. *
* *
* Usage: *
* database [-S<file>] *
* *
* -S<file> Specify save file for *
* debugging purposes *
* *
* Program will ask you for a name. *
* Enter the name; it will tell you if *
* it is the list. *
* *
* A blank name terminates the program. *
********************************************************/
#include <stdio.h>
FILE *save_file = NULL; /* Save file if any */
char *extended_fgets(char *, int, FILE *);
main(int argc, char *argv[])
{
char name[80]; /* a name to lookup */
char *save_file_name; /* Name of the save file */
int lookup(char *); /* lookup a name */
while ((argc > 1) && (argv[1][0] == '-')) {
switch (argv[1][1]) {
case 'S':
save_file_name = &argv[1][2];
save_file = fopen(save_file_name, "w");
if (save_file == NULL)
(void)fprintf(stderr,
"Warning:Unable to open save file %s\n",
save_file_name);
break;
default:
(void)fprintf(stderr,"Bad option: %s\n", argv[1]);
exit (8);
}
argc--;
argv++;
}
while (1) {
(void)printf("Enter name: ");
(void)extended_fgets(name, sizeof(name), stdin);
/* ... Rest of program ... */
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