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意法半導(dǎo)體筆試題和面試題答案

更新:2023-09-18 04:56:40 高考升學(xué)網(wǎng)

  A Test for The C Programming Language

  I. History

  1. C was originally designed for and implemented on the (what) operating system on the DEC PDP-11, by (who) .

  2. The most recently approved ANSI/ISO C standard was issued in (when), and single line comments notation “//” is or isn’t a feature of C89.

  II. Syntax and Semantics 1.In a runtime C program, auto variables are stored in , staticvariables are stored in , and function parameters are stored in .

  a. stack b. heap c. neither stack nor heap

  2. The statement “extern int x;” is a , and the keyword extern is used during .

  a. variable declaration b. variable definition c. compilation time d. runtime

  3. There is a complicated declaration: void ( signal (int, void()(int)) ) (int);If a statement “typedef void (p) (int);” is given,please rewrite this complicated declaration.

  4. The following code is a segment of C program.

  ..........

  void func(int p)

  {...........}

  ..........

  main()

  {

  int num=0;

  .........

  func(&num);

  ........

  }

  ..........

  Here, the function argument “&num” is passed .

  a. by value b. by reference

  III. Practice

  Create a tree, which has h (h>0) layers, and its each node has w(w>0) sub-nodes.Please complete the following incomplete solution.

  #include

  #include

  struct tree{

  char info;

  p_sub; //link to sub-nodes};

  // allocate memory and initiate

  void dnode ( struct tree tmp )

  {

  = malloc( sizeof (struct tree) );

  = 0x41;

  = NULL;

  }

  struct tree dtree (struct tree subtree, int height, int width)

  {

  int i;

  if ( !subtree ) //if necessary, allocte memory for subtree

  denode(subtree);

  if ( height == 1 )

  return subtree;

  else if ( height == 2 ) {

  struct tree leaf = NULL;

  for ( i=0; i

  denode ( );

  ;

  leaf = NULL;}

  return subtree;}

  else {

  for ( i=0; i

  }

  return subtree;

  }

  }

  main()

  {

  .........

  struct tree root = NULL

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