GATE | GATE-CS-2001 | Question 43

Consider the following three C functions :

[PI] int * g (void)
{
  int x= 10;
  return (&x);
}

[P2] int * g (void)
{
  int * px;
  *px= 10;
  return px;
}

[P3] int *g (void)
{
  int *px;
  px = (int *) malloc (sizeof(int));
  *px= 10;
  return px;
}

Which of the above three functions are likely to cause problems with pointers? (GATE 2001)
(A)
(B)
(C)
(D)

(A) Only P3
(B) Only P1 and P3
(C) Only P1 and P2

(D) P1, P2 and P3


Answer: (C)

Explanation: See https://www.geeksforgeeks.org/c-dynamic-memory-allocation-question-2/

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