Difference between revisions of "Dbgetseqno()"
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#include "dblproto.h" /* Recital/Library prototype file */ | #include "dblproto.h" /* Recital/Library prototype file */ | ||
| − | + | static void errorproc(char *func, char *str, int rc); | |
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| − | + | main() | |
| − | + | { | |
int rc; /* Return Code for error handling */ | int rc; /* Return Code for error handling */ | ||
char *dbf; /* File descriptor for table */ | char *dbf; /* File descriptor for table */ | ||
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} | } | ||
| − | + | static void errorproc(func, str, rc) | |
char *func; | char *func; | ||
char *str; | char *str; | ||
Latest revision as of 13:17, 1 May 2009
PURPOSE
return the next sequence number
SYNOPSIS
#include "dbl.h" int dbgetseqno(dbf, seqno) <input parameter> char *dbf; /* Table file descriptor */ <output parameters> long *seqno; /* Address of a buffer in which the sequence number is returned */
RETURN VALUES
The dbgetseqno() function returns 0 for success, or < 0 if an error occurs. See the section on return code values for a detailed list of return codes.
DESCRIPTION
The dbgetseqno() function returns the next sequence number for the specified table.
EXAMPLE
The following example sets the sequence number, then gets the sequence number.
#include <stdio.h> #include "dbl.h" /* Recital/Library include file */ #include "dblproto.h" /* Recital/Library prototype file */ static void errorproc(char *func, char *str, int rc); main() { int rc; /* Return Code for error handling */ char *dbf; /* File descriptor for table */ long *seqno; /* Buffer address for sequence number */ rc = dbdcache(100); errorproc("dbdcache()","table cache specified.", rc); rc = dbfilemode(1,0); rc = dbopen("shipwreck.dbf", &dbf); errorproc("dbopen()","table opened shared.", rc); rc=dbsetseqno(dbf, (long) 49); errorproc("dbsetseqno()", "seqno set to 49.", rc); rc=dbgetseqno(dbf, seqno); errorproc("dbgetseqno()", "seqno retrieved.", rc); printf("\t Seqno: \t%d\n", *seqno); rc = dbclose(dbf); errorproc("dbclose()", "table closed.", rc); exit(0); } static void errorproc(func, str, rc) char *func; char *str; int rc; { if ( rc != SUCCESS ) { printf("\n Error performing function %s -> %d\n", func, rc); exit(1); } printf("Function: \t%s, \t%s - Ok\n", func, str); return; }
