C pointers, Fork, Exec

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C pointers, Fork, Exec
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C pointers quiz

• 1. Which of the following is the proper
  declaration of a pointer?A. int xB. int xC.
  ptr xD. int x2. Which of the following
  gives the memory address of integer variable
  a?A. aB. aC. aD. address(a)3. Which
  of the following gives the memory address of a
  variable pointed to by pointer a?A. aB. aC.
  aD. address(a)4. Which of the following
  gives the value stored in the integer pointed to
  by the pointer a?A. aB. val(a)C. aD. a

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• 5. Which of the following is the proper
  keyword to allocate memory in C?A. newB.
  mallocC. createD. value6. Which of the
  following is the proper keyword to deallocate
  memory?A. freeB. deleteC. clearD. remove

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Exec and fork

• The fork system call creates a new process that
  is a clone of the existing one by just copying
  the existing one copying over the instruction,
  user-data and system-data segments!
• The exec system call reinitializes a process from
  a designated program the program changes while
  the process remains!

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Variants of Exec
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An Example
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Other pointers

• C pointers
• http//www.augustcouncil.com/tgibson/tutorial/ptr
  .html
• An introduction to pointers
• http//www.cprogramming.com/tutorial/c/lesson6.htm
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