#include "btree.h"
int bupdky(BTA* btact, char* key, BTint value);
The bupdky function updates the value of
an existing key in the current root of the file associated
with the btact context pointer. The
key, a character string, is passed via the pointer in
key. The new value is passed via
value. value is
declared as a BTint, which is normally a typedef for
int, but with Large File Support will be
a typedef for long long.
If the key does not exist, bupdky returns
the error code QNOKEY.
bupdky returns zero on successful update
of the key.
A non-zero return from bupdky
indicates an error occurred during the key update process.