Ensure if it is Mutual Exclusion or not

int turn =1
 

Process 1

If (turn != 0)                                      
 {                                                        
  Critical_Region()           
  noncritical_region()                         
    turn = 0                                              
 } 
 

Process2

if (turn !=1) {
 Critical_Region()
  noncritical_region()
 turn =1
  } 
 

Kindly tell me that if these two processes ensures that they are mutually exclusive or not?

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