Software-Engineering

Consider the following C program segment.

while (first <= last)
{
   if (array [middle] < search)
      first = middle +1;
   else if (array [middle] == search)
      found = True;
   else last = middle – 1;
   middle = (first + last)/2;
}
if (first < last) not Present = True;

The cyclomatic complexity of the program segment is __________.