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A non-zero value is returned, if setjmp() returns from a longjmp() function call.

  • A.false
  • B.true

Answer: B

Correct answer: true

setjmp returns 0 when it is called directly to save the environment, and a non-zero value when control arrives there from a longjmp - the value longjmp was given. Testing the return value is how the code distinguishes the two arrivals.

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