面向?qū)ο蟪绦蛟O(shè)計(jì)一、分析程序題(每題30分,共1道小題,總分值30分)1.下面的代碼有什么問(wèn)題？并請(qǐng)給出正確的寫(xiě)法。voidDoSomeThing(char*p){charstr[16];intn;assert(NULL!=p);sscanf(p,"%s%d",str,n);if(0==strcmp(str,"something")){...}}(30分)sscanf(p,"%s%d",str,n);這句該寫(xiě)成:sscanf(p,"%s%d",str,&n);二、編寫(xiě)程序?qū)崿F(xiàn)算法(每題30分,共1道小題,總分值30分)1.寫(xiě)一個(gè)算法，根據(jù)輸入的年月日得到該日期是該年份的第幾天。(30分)#include<stdio.h>

intmain()

{

intyear,month,day;//年月日

intjudge,i;

intsum=0;//標(biāo)記天數(shù)

intdate[2][12]={

{31,28,31,30,31,30,31,31,30,31,30,31},

{31,29,31,30,31,30,31,31,30,31,30,31}};//儲(chǔ)存閏年和非閏年每一月的天數(shù)

printf("輸入年月日:");

scanf("%d%d%d",&year,&month,&day);

judge=(year%4==0)||(year%400==0&&year%100!=0);

//判斷年份是不是閏年是閏年judge就是1;否則就是0

for(i=0;i<month-1;i++)//加month之前的所有天數(shù)

sum+=date[judge][i];

sum+=day;//加當(dāng)天月份的天數(shù)day

printf("它是%d年中的第%d天\n",year,sum);

return0;

}三、程序設(shè)計(jì)(每題40分,共1道小題,總分值40分)1.設(shè)計(jì)實(shí)現(xiàn)一個(gè)復(fù)數(shù)類(lèi)，1）實(shí)現(xiàn)拷貝構(gòu)造函數(shù)；2）實(shí)現(xiàn)復(fù)數(shù)的乘法和除法，輸出計(jì)算結(jié)果。(40分)#include<iostream>

usingnamespacestd;structplural{

doublereal,imaginary;plural()

{

real=imaginary=0.0;

}

plural(constplural&c);//復(fù)制構(gòu)造函數(shù)（一定要用引用）

pluraloperator*(plural&s)

{

pluralt;

t.real=s.real*real-s.imaginary*imaginary;

t.imaginary=real*s.imaginary+imaginary*s.real;

returnt;

}

pluraloperator/(plural&s)

{

pluralt;

t.real=(s.real/real+s.imaginary/imaginary)/(real*real+imaginary*imaginary);

t.imaginary=(s.imaginary/real-s.real/imaginary)/(real*real+imaginary*imaginary);

returnt;

}

~plural(){}

};istream&operator>>(istream&in,plural&s)

{

printf("請(qǐng)輸入實(shí)部:\n");

scanf("%lf",&s.real);

printf("請(qǐng)輸入虛部:\n");

scanf("%lf",&s.imaginary);

returnin;

}

ostream&operator<<(ostream&ou,plural&s)

{

printf("%.4lf+%.4lfi",s.real,s.imaginary);returnou;

}

intmain(){

plurala,b,c;

cin>>a>>b;

c=a*b;

cout<<c<<endl;

c=a/b;

cout<<c<<endl;

system("pause");

}1.數(shù)據(jù)描述:編號(hào)、書(shū)名、價(jià)格、作者、出版社、出版日期、存量編寫(xiě)程序完成功能：將書(shū)籍記錄按照價(jià)格排序（由高到低）并輸出。publicclassBook{//設(shè)置屬性的私有訪問(wèn)權(quán)限privateStringnumber;//編號(hào)privateStringname;//書(shū)名privatedoubleprice;//價(jià)格privateStringauthor;//作者privateStringpublisher;//出版社privateStringdate;//出版日期privateintstock;//存量//通過(guò)公有的get,set方法實(shí)現(xiàn)對(duì)屬性的訪問(wèn)publicStringgetNumber(){returnnumber;}publicvoidsetNumber(Stringnumber){this.number=number;}publicStringgetName(){returnname;}publicvoidsetName(Stringname){=name;}publicvoidsetPrice(doubleprice){this.price=price;}publicdoublegetPrice(){returnprice;}publicStringgetAuthor(){returnauthor;}publicvoidsetAuthor(Stringauthor){this.author=author;}publicStringgetPublisher(){returnpublisher;}publicvoidsetPublisher(Stringpublisher){this.publisher=publisher;}publicStringgetDate(){returndate;}publicvoidsetDate(Stringdate){this.date=date;}publicvoidsetStock(doublestock){this.stock=stock;}publicdoublegetStock(){returnstock;}//無(wú)參構(gòu)造方法publicBook(){}//有參構(gòu)造方法實(shí)現(xiàn)屬性賦值publicBook(Stringnumber,Stringname,doubleprice,Stringauthor,Stringpublisher,Stringdate,intstock){//有四個(gè)參構(gòu)造方法this.number=number;=name;this.setPrice(price);this.author=author;this.publisher=publisher;this.date=date;this.setStock(stock);}publicvoidinformation(){//展示書(shū)本信息的方法//編號(hào)、書(shū)名、價(jià)格、作者、出版社、出版日期、存量System.out.println("編號(hào):"+this.getNumber());System.out.println("書(shū)名:"+this.getName());System.out.println("價(jià)格:"+price+"元");System.out.println("作者:"+this.getAuthor());System.out.println("出版社:"+this.getPublisher());System.out.println("出版日期:"+this.getDate());System.out.println("存量:"+stock+"本");}}//降序排序方法Collections.sort(list,newComparator<Book>(){publicintcompare(Bookb1,Bookb2){//按照價(jià)格大小進(jìn)行降序排列if(b1.getPrice()<b2.getPrice()){return1;}if(b1.getPrice()==b2.getPrice()){return0;}return-1;}});publicclassTestBook{publicstaticvoidmain(String[]args){//編號(hào)、書(shū)名、價(jià)格、作者、出版社、出版日期、存量List<Book>list=newArrayList<Book>();Bookb1=newBook("0001","平凡的世界",60.0,"路遙","人民文學(xué)出版社","2006年5月4日",100);//創(chuàng)建對(duì)象的同時(shí)給屬性賦值Bookb2=newBook("0002","西游記",50.0,"吳承恩","東方文學(xué)出版社","2007年9月10日",120);//創(chuàng)建對(duì)象的同時(shí)給屬性賦值Bookb3=newBook("0003","倚天屠龍記",55.0,"金庸","西安文學(xué)出版社","199年7月13日",600);//創(chuàng)建對(duì)象的同時(shí)給屬性賦值Bookb4=newBook("0004","文化苦旅",49.0,"余秋雨","青年出版社","2017年8月29日",203);//創(chuàng)建對(duì)象的同時(shí)給屬性賦值list.add(b1);list.add(b2);list.add(b3);list.add(b4);Arrays.sort(list,Collections.sort());//按照價(jià)格大小進(jìn)行降序排列for(Bookbook:list){rmation();//降序排列之后輸出}}}一、程序分析題voidmain(){charstr1[]="abc";charstr2[]="abc";constcharstr3[]="abc";constcharstr4[]="abc";constchar*str5="abc";constchar*str6="abc";cout＜＜boolalpha＜＜(str1==str2)＜＜endl;cout＜＜boolalpha＜＜(str3==str4)＜＜endl;cout＜＜boolalpha＜＜(str5==str6)＜＜endl;}str1,str2分別為字符數(shù)組，str1,str2分別表示指向字符串”abc”的首地址，因?yàn)閟tr1和str2各自都有存儲(chǔ)區(qū)，他們的值是各自存儲(chǔ)區(qū)的首地址不同。二者不等,輸出false。而str3與str4類(lèi)似，只是為const，即指向的數(shù)據(jù)區(qū)不能改變。二者不等，輸出false。Str5與str6為字符指針，而非字符數(shù)組，他們分別指向常量字符串”abc”，“abc”存儲(chǔ)在靜態(tài)存儲(chǔ)區(qū)。即str5和str6為串“abc”的地址，所以str5==str6。二者相等，輸出true。所以輸出結(jié)果為falsefalsetrue二、編寫(xiě)程序?qū)崿F(xiàn)算法(每題30分,共1道小題,總分值30分)1.不調(diào)用標(biāo)準(zhǔn)庫(kù)函數(shù)，自己實(shí)現(xiàn)strcpy。函數(shù)原型char*MyStrCpy(char*szDest,constchar*szSrc);char*MyStrCpy(char*szDest,constchar*szSrc){if((szDest==NULL)||(szSrc==NULL))//[1]throw"Invalidargument(s)";//[2]char*szDestCopy=szDest;//[3]while((*szDest++=*szSrc++)!='/0');//[4]returnszDestCopy;}三、程序設(shè)計(jì)(每題40分,共1道小題,總分值40分)1.設(shè)計(jì)實(shí)現(xiàn)一個(gè)復(fù)數(shù)類(lèi)，并1）實(shí)現(xiàn)復(fù)數(shù)的加法和減法，輸出計(jì)算結(jié)果；2）實(shí)現(xiàn)復(fù)數(shù)的“==”符號(hào)重載相等判斷。//設(shè)計(jì)實(shí)現(xiàn)一個(gè)復(fù)數(shù)類(lèi)，并//1）實(shí)現(xiàn)復(fù)數(shù)的加法和減法，輸出計(jì)算結(jié)果；//2）實(shí)現(xiàn)復(fù)數(shù)的“==”符號(hào)重載相等判斷。#include<iostream>usingnamespacestd;classComplex{public:Complex(){real=0;imag=0;}Complex(doubler,doublei){real=r;imag=i;}Complexoperator+(Complex&);//操作符重載，兩復(fù)數(shù)相加Complexoperator-(Complex&);//操作符重載，兩復(fù)數(shù)相減booloperator==(Complex&);//操作符重載，判斷是否相等doublegetReal(void)const;//返回實(shí)部doublegetImag(void)const;//返回虛部doublesetReal(doublereal);//設(shè)置實(shí)部doublesetImag(doubleimag);//設(shè)置虛部doublereal;doubleimag;};ComplexComplex::operator+(Complex&c2){returnComplex(real+c2.real,imag+c2.imag);}ComplexComplex::operator-(Complex&c2){returnComplex(real-c2.real,imag-c2.imag);}boolComplex::operator==(Complex&b){returngetReal()==b.getReal()&&getImag()==b.getImag();}doubleComplex::getImag(void)const{