半導(dǎo)體類(lèi)筆試題目

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(&nu（文章轉(zhuǎn)載自[個(gè)人簡(jiǎn)歷網(wǎng)] http://www.gerenjianli.com 請(qǐng)保留此標(biāo)記）m);
　　........
　　}
　　..........
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 <stdlib.h>
　　#include <string.h>
　　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<width; i++ ) {
　　denode ( );
　　;
　　leaf = NULL;}
　　return subtree;}
　　else {
　　for ( i=0; i<width; i++ ) {
　　}
　　return subtree;
　　}
　　}
　　main()
　　{
　　.........
　　struct tree *root = NULL;

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