#include
#include
int values[] = { 1 , 2 , 3, 4 , 9 , 10 };
int compare (const void * a, const void * b) {
return ( *(int*)a - *(int*)b );
}
int main ()
{
int *pos;
int key = 9;
pos = (int*) bsearch (&key, values, 6, sizeof (int), compare);
if ( pos != NULL )
printf ("%d is in the array", *pos);
else
printf ("%d is not in the array", key);
return 0;
}