The function clearvar() clears all saved variables values.
It returns a 0 for a successful operation, and nonzero otherwise.
int clearvar ();
Example:
void main()
{
int x = 0;
loadvar(x);
if(x == 0)
{
printf("Variable x not saved");
x = 4711;
savevar(x);
}
loadvar(x);
printf("Variable x : %d",x);
clearvar();
}
Output:
Variable x not saved
Variable x : 4711