一．填空题(26分)
1． WIN32平台下，sizeof(short) = ____，sizeof(int) = ____，sizeof(long) = ____。(3分)
2．请给出如下程序的结果(2分)
int a = 3;
int b = a << 3;a = ____，b = ____。3．请给出如下程序的结果(2分)int aaa = 0x01;htonl(aaa) = ____。4．请给出如下程序的结果(2分)#define MAX_NUM 100+200int nTemp = MAX_NUM*10;则Temp = ____。5．请给出如下程序的结果(3 分)char szTemp[1000] = "";int nLen1 = sizeof(szTemp);int nLen2 = strlen(szTemp);strcpy(szTemp, "abc");int nLen3 = sizeof(szTemp);int nLen4 = strlen(szTemp);int nTemp[100];int *pTemp = nTemp;int nLen5 = sizeof(pTemp);char szResult[200] = "";sprintf(szResult, "%d,%d,%d,%d,%02d.", nLen1, nLen2, nLen3, nLen4, nLen5);则szResult = ____。6．MFC中，大部分类是从哪个类继承而来（CCmdTarget、CObject、CWinApp、CWnd）？(2分)____7．内存是进程范围or线程范围；____CPU调度时，针对进程or线程；____函数调用堆栈，针对进程or线程。____(3分)8．调用函数bbb后，输出是什么(4分)void ccc(int x){char szTemp[10] = "";x = 2;sprintf(szTemp, "%d,", x);afxDump << szTemp;if(x = 3){int x = 4;sprintf(szTemp, "%d,", x);afxDump << szTemp;}sprintf(szTemp, "%d,", x);afxDump << szTemp;}void bbb(){char szTemp[10] = "";int x = 7;ccc(x);sprintf(szTemp, "%d,", x);afxDump << szTemp;}二．改错题(总共15分,每题5分)。1．下面代码有何错误void func1(){int *pa = NULL;func2(pa);delete pa;}void func2(int *pb){pb = new int(5);}2．下面代码有何错误void func2(int *value){*value = 2;}void func1(){int *p = 0;func2(p);}3．int func1(int& b){return 0;}void func2(){int bbb = 3;func1(&bbb);func1(bbb);}func2中有何错误，func1的参数b的类型是什么。三．简答题(64分)1.请简述C、C++、VC、MFC在概念上的区别(4分)2．请写一个函数重载的简单例子(4分)3.用什么函数开启新进程、线程。(4分)4.SendMessage和PostMessage有什么区别(4分)5.WaitForSingleObject有何作用；m_pThrd的类型是CWinThread*时，WaitForSingleObject(m_pThrd->m_hThread, INFINITE);有何作用。(4分)
6. __stdcall、__cdecl、__pascal在什么方面有所不同。(4分)
7．请把下述代码加上异常处理。(6分)
int MyWriteFile(CString strFileName, CString strText)
{
int nRet = 0;
CFile myFile;
myFile.Open(strFileName, CFile::modeWrite|CFile::shareExclusive|CFile::modeCreate, NULL);
int nLen = strText.GetLength();
myFile.Write((char*)(LPCSTR)strText, nLen);
myFile.Close();
return nRet;
}
8．请解释“func”为何种类型，这种类型的作用什么，变量ttt 的值是多少？(6分)
typedef int (*func)(int, int*);
int xxx(int a, int *p)
{
return a + *p;
}
int dowork(func aaa, int bbb, int *ccc)
{
return aaa(bbb, ccc);
}
int sss = 4;
int ttt = dowork(&xxx, 3, &sss);
9．请问下述代码中: int operator+(…）起什么作用？this是什么？ccc 的值最终为多少？(6分)
class Fruit
{
public:
Fruit()
{
weight = 2;
}
Fruit(int w)
{
weight = w;
}
int operator+(Fruit f)
{
return this->weight * f.weight;
}
private:
int weight;
};
Fruit aaa;
Fruit bbb(4);
int ccc = aaa + bbb;
10.请解释下面代码采用了何种C++特性（C语言不具备），作用是什么？(6分)
template
T sum(T a, T b)
{
return (a + b);
}
11．请解释aaa.h中下面代码的功能(5分)
#if !defined(AFX_MYSUDU_H__9B952BEA_A051_4026_B4E5_0598A39D2DA4__INCLUDED_)
#define AFX_MYSUDU_H__9B952BEA_A051_4026_B4E5_0598A39D2DA4__INCLUDED_
… …
#endif
12．CMemoryState主要功能是什么(5分)
13．请阅读下述代码，写出程序执行的结果（6分）
#include
using namespace std;
class Cbase
{
public:
virtual void print()
{
cout<< "base" << endl; } void DoPrint() { print(); }};class CChild1: public Cbase{public: virtual void print() { cout<< "child1" << endl; }};class CChild2: public Cbase{public: virtual void print() { cout<< "child2" << endl; }};void DoPrint(Cbase *base){ base->DoPrint();
}
void main()
{
Cbase* base = new Cbase();
CChild1* child1 = new CChild1();
CChild2* child2 = new CChild2();
DoPrint(child1);
DoPrint(child2);
DoPrint(base);
delete base;
base = child1;
base->print();
delete child1;
delete child2;
}
