The
bsearch() function searches an array of
nmemb objects, the initial member of which is pointed to by
base, for a member that matches the object pointed to by
key. The size of each member of the array is specified by
size.
The contents of the array should be in ascending sorted order according to the comparison function referenced by
compar. The
compar routine is expected to have two arguments which point to the
key object and to an array member, in that order, and should return an integer less than, equal to, or greater than zero if the
key object is found, respectively, to be less than, to match, or be greater than the array member.