9.哪种结构平均来讲获取一个值最快?

A. binary tree

B. hash table

C. stack

10.

#include

“stdafx.h”

#include

struct bit

{ int a:3;

int b:2;

int c:3;

};

int main(int argc, char* argv[])

{

bit s;

char *c = (char*)&s;

*c = 0x99;

cout <<

s.a < return 0;

}

Output:?

11.

挑bug，在linux下运行：

#include

char

*reverse(char* str)

{

int len=0, i=0;

char *pstr=str, *ptemp,*pd;

while(*++pstr)

len++;

pstr--;

//ptemp=(char*)malloc(len+1);

ptemp=(char*)malloc(len+1);

pd=ptemp;

while(len--){

*ptemp=*pstr;

ptemp++;

pstr--;

i++;

}

*ptemp=*pstr;

ptemp++;

*ptemp=‘\0’;

return pd;

}

main()

{

char string[40]= “Hello World!”;

char *pstr=string;