几道c笔试题(参考答案).doc

1.What is displayed when f() is called given the code:class Number {public:string type; Number(): type(“void”) { }explicit Number(short) : type(“short”) { }Number(int) : type(“int”) { }};void Show(const Number n) { cout n.type; }void f(){short s = 42;Show(s);}a) voidb) shortc) intd) None of the above 2. Which is the correct output for the following codedouble dArray[2] = {4, 8}, *p, *q;p = dArray[0];q = p + 1;cout q – p endl;cout (int)q – (int)p endl;a) 1 and 8b) 8 and 4c) 4 and 8d) 8 and 1 第一个选C；虽然传入的是short类型，但是short类型的构造函数被生命被explicit，也就是只能显示类型转换，不能使用隐式类型转换。第二个选A；第一个是指针加减，按照的是指向地址类型的加减，只跟类型位置有关，q和p指向的数据类型以实际数据类型来算差一个位置，因此是1。而第二个加减是实际指针值得加减，在内存中一个double类型占据8个字节，因此是8 c/c++某大公司的两道笔试题(含参考答案 ) 1.一群人围成一圈，123的报数，报3者出列，求最后一个人。2.利用链表实现将两个有序队列A和B合并到有序队列H中，不准增加其他空间。请提供全一点的程序 第一题： // kickout.cpp : Defines the entry point for the console application.// #include “stdafx.h”#include “malloc.h”#include “stdio.h” int main(){int m,n;int kickouts = 0;int *p = NULL;int i ,j;i=j=0;printf(“Please input m,n:”);scanf(“%d,%d”,m,n); while(n1){printf(n doent less 0 , retry n:);scanf(%d,n);} p=(int*)malloc(m*sizeof(int));for(i=0;ip[i]=1;i = 0;while(1){i = i%m;if(p[i++]) j++;if(j == n){p[i-1]=0;j = 0;kickouts++;}if(kickouts == m-1)break;}for(i = 0;iif(p[i]) printf(%d\n,i+1);return 0;} 2、升序还是降序？以升序为例：while(a != NULL b!= NULL){if (a-data b-data){h-data = a-data;a = a-next;}else if (a-data == b-data){h-data = a-data;a = a-next;b = b-next;}else{h-data = b-data;b = b-next}h = h-next;}if (a == NULL){while (b != NULL){h-data = b-data;h = h-next;b = b-next;}}else{while(a != NULL){h-data = a-next;h = h-next;a = a-next;}} C语言面试题 1。编写一个 C 函数，该函数在一个字符串中找到可能的最长的子字符串，且该字符串是由同一字符组成的。char * search(char *cpSource, char ch){char *cpTemp=NULL, *cpDest=NULL;int iTemp, iCount=0;while(*cpSource){if(*cpSource == ch){iTemp = 0;cpTemp = cpSource;while(*cpSource == ch)++iTemp, ++cpSource;