德尔福软件类笔试题和面试题答案目(3)

招聘笔试题2018-11-22李一老师

  int *ptr;

  ptr =(int *)Ox67a9;

  ptr = Oxaa55;

  11. What will be the output of the follow C code?

  define product(x) (x*x)

  main()

  {

  int i = 3, j, k;

  j = product(i++);

  k = product(++i);

  printf("%d %d",j,k);

  }

  12. Simplify the following Boolean expression!((i ==12) || (j > 15))

  13. How many flip-flop circuits are needed to spanide by 16?

  14. Provides 3 properties that make an OS, a RTOS?

  15. What is pre-emption?

  16. Assume the BC register value is 8538H, and the DE register value is 62A5H.Find the value of register BC after the following assembly operations:

  MOV A,C

  SUB E

  MOV C,A

  MOV A,B

  SBB D

  MOV B,A

  17.In the Assembly code shown below

  LOOP: MVI C,78H

  DCR C

  JNZ LOOP

  HLT

  How many times is the DCR C Operation executed?

  18.Describe the most efficient way(in term of execution time and code size) to spanide a number by 4 in assembly language
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