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1、新标准新标准 C+C+程序设计习题解答程序设计习题解答 第第 1 11 1 章章- -第第 2 20 0 章章 郭炜郭炜 第十一章习题第十一章习题 1. 1. 结构化程序设计有什么不足？面向对象的程序设计如何改进这些不足？ 2. 2. 以下说法正确的是： A) 每个对象内部都有成员函数的实现代码 B) 一个类的私有成员函数内部不能访问本类的私有成员变量 C) 类的成员函数之间可以互相调用 D) 编写一个类时，至少要写一个成员函数 #C 3.3. 以下对类 A 的定义，哪个是正确的？ A) class A private: int v; public : void Func() B) class
2、 A int v; A * next; void Func() ; C) class A int v; public: void Func(); ; A:void Func() D)class A int v; public: A next; void Func() ; #B 4. 4. 假设有以下类 A: class A public: int func(int a) return a * a; ; 以下程序片段，哪个是不正确的？ A) A a; a.func(5); B) A * p = new A; p-func(5); C) A a; A r.func(5); D) A a,b; if
3、( a != b) a.func(5); #D 5.5.以下程序，哪个是不正确的？ A) int main() class A int v; ; A a; a.v = 3; return 0; B) int main() class A public: int v; A * p; ; A a; a.p = return 0; C)int main() class A public: int v; ; A * p = new A; p-v = 4; delete p; return 0; D) int main() class A public: int v; A * p; ; A a; a.p
4、 = new A; delete a.p; return 0; #A 6. 6. 实现一个学生信息处理程序。输入：姓名，年龄，学号（整数） ，第一学年平均成绩，第二学年平 均成绩，第三学年平均成绩，第四学年平均成绩。输出：姓名，年龄，学号，四年平均成绩。例如： 输入：Tom,18,7817,80,80,90,70 输出：Tom,18,7817,80 要求实现一个代表学生的类，并且所有成员变量都应该是私有的。 #include #include #include #include using namespace std; class CStudent private: int age; int
5、id; char name20; int averageScore4; public: int average() int sum = 0; for( int i = 0;i GetColor(szColor); printf(“%03d %s %s %d born with strength %d,%d %s in %s headquartern“ , nTime, szColor, NamesnKindNo, nNo, InitialLifeValuenKindNo, pHeadquarter-anWarriorNumnKindNo,NamesnKindNo,szColor); void
6、CHeadquarter:Init(int nColor_, int lv) nColor = nColor_; nTotalLifeValue = lv; nTotalWarriorNum = 0; bStopped = false; nCurMakingSeqIdx = 0; for( int i = 0;i PrintResult(nTime); nTotalWarriorNum +; return 1; void CHeadquarter:GetColor( char * szColor) if( nColor = 0) strcpy(szColor,“red“); else strc
7、py(szColor,“blue“); char * CWarrior:NamesWARRIOR_NUM = “dragon“,“ninja“,“iceman“,“lion“,“wolf“ ; int CWarrior:InitialLifeValue WARRIOR_NUM; int CHeadquarter:MakingSeq2WARRIOR_NUM = 2,3,4,1,0 ,3,0,1,2,4 ; /两个司令部武士 的制作顺序序列 int main() int t; int m; CHeadquarter RedHead,BlueHead; scanf(“%d“, int nCaseNo
8、 = 1; while ( t - ) printf(“Case:%dn“,nCaseNo+); scanf(“%d“, for( int i = 0;i GetColor(szColor); printf(“%03d %s %s %d born with strength %d,%d %s in %s headquartern“ , nTime, szColor, NamesnKindNo, nNo, InitialLifeValuenKindNo, pHeadquarter-anWarriorNumnKindNo,NamesnKindNo,szColor); class CDragon:p
9、ublic CWarrior private: CWeapon wp; double fmorale; public: void Countmorale() fmorale = pHeadquarter - GetTotalLifeValue() /(double)CWarrior:InitialLifeValue 0; CDragon( CHeadquarter * p,int nNo_): CWarrior(p,nNo_) wp.nKindNo = nNo % WEAPON_NUM; wp.nForce = CWeapon:InitialForcewp.nKindNo ; Countmor
10、ale(); void PrintResult(int nTime) CWarrior:PrintResult(nTime,DRAGON); printf(“It has a %s,and its morale is %.2fn“, CWeapon:Nameswp.nKindNo, fmorale); ; class CNinja:public CWarrior private: CWeapon wps2; public: CNinja( CHeadquarter * p,int nNo_): CWarrior(p,nNo_) wps0.nKindNo = nNo % WEAPON_NUM;
11、wps0.nForce = CWeapon:InitialForcewps0.nKindNo; wps1.nKindNo = ( nNo + 1) % WEAPON_NUM; wps1.nForce = CWeapon:InitialForcewps1.nKindNo; void PrintResult(int nTime) CWarrior:PrintResult(nTime,NINJA); printf(“It has a %s and a %sn“, CWeapon:Nameswps0.nKindNo, CWeapon:Nameswps1.nKindNo); ; class CIcema
12、n:public CWarrior private: CWeapon wp; public: CIceman( CHeadquarter * p,int nNo_): CWarrior(p,nNo_) wp.nKindNo = nNo % WEAPON_NUM; wp.nForce = CWeapon:InitialForce wp.nKindNo ; void PrintResult(int nTime) CWarrior:PrintResult(nTime,ICEMAN); printf(“It has a %sn“, CWeapon:Nameswp.nKindNo); ; class C
13、Lion:public CWarrior private: int nLoyalty; public: void CountLoyalty() nLoyalty = pHeadquarter -GetTotalLifeValue(); CLion( CHeadquarter * p,int nNo_):CWarrior(p,nNo_) CountLoyalty(); void PrintResult(int nTime) CWarrior:PrintResult(nTime,LION); CountLoyalty(); printf(“Its loyalty is %dn“,nLoyalty)
14、; ; class CWolf:public CWarrior public: CWolf( CHeadquarter * p,int nNo_): CWarrior(p,nNo_) void PrintResult(int nTime) CWarrior:PrintResult(nTime,WOLF); ; void CHeadquarter:Init(int nColor_, int lv) nColor = nColor_; nTotalLifeValue = lv; bStopped = false; nCurMakingSeqIdx = 0; nTotalWarriorNum = 0
15、; for( int i = 0;i PrintResult(nTime); nTotalWarriorNum +; return 1; void CHeadquarter:GetColor( char * szColor) if( nColor = 0) strcpy(szColor,“red“); else strcpy(szColor,“blue“); const char * CWeapon:NamesWEAPON_NUM = “sword“,“bomb“,“arrow“ ; int CWeapon:InitialForceWEAPON_NUM; const char * CWarrior:NamesWARRIOR_NUM = “dragon“,“ninja“,“iceman“,“lion“,“wolf“ ; int CWarrior:InitialLifeValue WARRIOR_NUM; int CHeadquarter:MakingSeq2WARRIOR_NUM = 2,3,4,1,0 ,3,0,1,
