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时间:2018-07-21
《李爱华、程磊_面向对象程序设计课后答案》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、第二章2-4#includeusingnamespacestd;Add(inta,intb);intmain(){intx,y,sum;cout<<"pleaseinputxandy:";cin>>x>>y;sum=add(x,y);cout<2、005001500150050020015002-6#includeusingnamespacestd;intmain(){int*p,*init;intcountp=0;intcountn=0;p=newint[20];init=p;for(inti=0;i<20;i++){cin>>*p;p++;}p=p-20;for(i=0;i<20;i++){if(*p>0)countp++;if(*p<0)countn++;cout<<*p<<"";p++;}cout<<"正数有:"<3、ountn<//#includeusingnamespacestd;voidcheckagescore(stringname,intage){if(name=="exit")throwname;if(age<04、5、age>50)throwage;}intmain(){stringname;intage;for(inti=0;i<5;i++){cin.ignore();getline(cin,name);cin>>age;try{6、checkagescore(name,age);}catch(string){cout<<"exception:nameisexit"<7、造函数应当给常数据成员和引用成员初始化,将构造函数改为:A(inta1,intb1):a(a1),b(b1){}或A(inta1):a(a1),b(a){}再将main中的Aa(1,2);改为Aa(1);(3)(1)在Test类中添加语句:voidprint();voidPrint(){cout<8、int();3-8(1)ConstructingAConstructingBDestructingBDestructingA(2)doublea,doublebpoint&pp.x3-9classbox{intlen1,len2,len3;public:box(intl1,intl2,intl3){len1=l1;len2=l2;len3=l3;}longvolumn(){returnlen1*len2*len3;}};3-10classTest{intm1,m2;public:voidInit(inta,intb){m1=a;m2=b;}voidPrin9、g(){cout<//#includeusingnamespacestd;classCtest{private:intx;constinty1;public:constinty2;Ctest(inti1,i10、nti2):y1(i1),y2(i2){y1=10;//y1为常量
2、005001500150050020015002-6#includeusingnamespacestd;intmain(){int*p,*init;intcountp=0;intcountn=0;p=newint[20];init=p;for(inti=0;i<20;i++){cin>>*p;p++;}p=p-20;for(i=0;i<20;i++){if(*p>0)countp++;if(*p<0)countn++;cout<<*p<<"";p++;}cout<<"正数有:"<3、ountn<//#includeusingnamespacestd;voidcheckagescore(stringname,intage){if(name=="exit")throwname;if(age<04、5、age>50)throwage;}intmain(){stringname;intage;for(inti=0;i<5;i++){cin.ignore();getline(cin,name);cin>>age;try{6、checkagescore(name,age);}catch(string){cout<<"exception:nameisexit"<7、造函数应当给常数据成员和引用成员初始化,将构造函数改为:A(inta1,intb1):a(a1),b(b1){}或A(inta1):a(a1),b(a){}再将main中的Aa(1,2);改为Aa(1);(3)(1)在Test类中添加语句:voidprint();voidPrint(){cout<8、int();3-8(1)ConstructingAConstructingBDestructingBDestructingA(2)doublea,doublebpoint&pp.x3-9classbox{intlen1,len2,len3;public:box(intl1,intl2,intl3){len1=l1;len2=l2;len3=l3;}longvolumn(){returnlen1*len2*len3;}};3-10classTest{intm1,m2;public:voidInit(inta,intb){m1=a;m2=b;}voidPrin9、g(){cout<//#includeusingnamespacestd;classCtest{private:intx;constinty1;public:constinty2;Ctest(inti1,i10、nti2):y1(i1),y2(i2){y1=10;//y1为常量
3、ountn<//#includeusingnamespacestd;voidcheckagescore(stringname,intage){if(name=="exit")throwname;if(age<0
4、
5、age>50)throwage;}intmain(){stringname;intage;for(inti=0;i<5;i++){cin.ignore();getline(cin,name);cin>>age;try{
6、checkagescore(name,age);}catch(string){cout<<"exception:nameisexit"<7、造函数应当给常数据成员和引用成员初始化,将构造函数改为:A(inta1,intb1):a(a1),b(b1){}或A(inta1):a(a1),b(a){}再将main中的Aa(1,2);改为Aa(1);(3)(1)在Test类中添加语句:voidprint();voidPrint(){cout<8、int();3-8(1)ConstructingAConstructingBDestructingBDestructingA(2)doublea,doublebpoint&pp.x3-9classbox{intlen1,len2,len3;public:box(intl1,intl2,intl3){len1=l1;len2=l2;len3=l3;}longvolumn(){returnlen1*len2*len3;}};3-10classTest{intm1,m2;public:voidInit(inta,intb){m1=a;m2=b;}voidPrin9、g(){cout<//#includeusingnamespacestd;classCtest{private:intx;constinty1;public:constinty2;Ctest(inti1,i10、nti2):y1(i1),y2(i2){y1=10;//y1为常量
7、造函数应当给常数据成员和引用成员初始化,将构造函数改为:A(inta1,intb1):a(a1),b(b1){}或A(inta1):a(a1),b(a){}再将main中的Aa(1,2);改为Aa(1);(3)(1)在Test类中添加语句:voidprint();voidPrint(){cout<8、int();3-8(1)ConstructingAConstructingBDestructingBDestructingA(2)doublea,doublebpoint&pp.x3-9classbox{intlen1,len2,len3;public:box(intl1,intl2,intl3){len1=l1;len2=l2;len3=l3;}longvolumn(){returnlen1*len2*len3;}};3-10classTest{intm1,m2;public:voidInit(inta,intb){m1=a;m2=b;}voidPrin9、g(){cout<//#includeusingnamespacestd;classCtest{private:intx;constinty1;public:constinty2;Ctest(inti1,i10、nti2):y1(i1),y2(i2){y1=10;//y1为常量
8、int();3-8(1)ConstructingAConstructingBDestructingBDestructingA(2)doublea,doublebpoint&pp.x3-9classbox{intlen1,len2,len3;public:box(intl1,intl2,intl3){len1=l1;len2=l2;len3=l3;}longvolumn(){returnlen1*len2*len3;}};3-10classTest{intm1,m2;public:voidInit(inta,intb){m1=a;m2=b;}voidPrin
9、g(){cout<//#includeusingnamespacestd;classCtest{private:intx;constinty1;public:constinty2;Ctest(inti1,i
10、nti2):y1(i1),y2(i2){y1=10;//y1为常量
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