Question

Suppose in a multiprogramming environment, the following C program segment is executed. A process goes into the I/O queue whenever an I/O related operation is performed. Assume that there will always be a context switch whenever a process requests an I/O, and also whenever the process returns from an I/O. The number of times the process will enter the ready queue during its lifetime (not counting the time the process enters the ready queue when it is run initially) is _________ (Answer in integer).

Hint:

Each I/O operation (like `scanf()` and `printf()`) causes a context switch, where the process moves between the I/O queue and the ready queue. Count the number of iterations and operations to determine the number of context switches.

Answer 1