MadeEasy Subject Test: Operating System - Process Synchronization

Question

Consider the following ‘C’ code

Assume P1 and P2 are two concurrent processes and sharing the global variables x, y and z. Assignments
and tests are atomic. Consider the following statements :
S1 : P1 and P2 terminates                           S2 : P1 terminates but P2 does not
S3 : P2 terminates but P1 does not            S4 : Neither P1 nor P2 terminates
 

my answer S1 and S4 but solution is different

Comments

No answer in solution they have provided a solution for different problem :P

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and you are approaching this wrong diffrent pid means different process id no relation with how any time you write code

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https://gateoverflow.in/288625/madeeasy-series-operating-system-process-synchronization

Answer 1

These are 4 possibilities  

 

Hope it will help

Answer 2

answer could be S1,S2 and S4...

S3 not possible because if P2 terminate P1 has to terminate..