c++編程題匯總450份

1、日月年MOON:間時試考號學1. C+編程題試卷第三章編寫一個求方程ax2+bx+c=0的根的程序，用3個函數(shù)分別求當b2-4ac大于零、等于零、和小于零時的方程的根。要求從主函數(shù)輸入a,b,c的值并輸出結果。2. #include<iostream.h>#include<math.h>voidequation_1(inta,intb,intc)(doublex1,x2,temp;temp=b*b-4*a*c;x1=(-b+sqrt(temp)/(2*a*1.0);x2=(-b-sqrt(temp)/(2*a*1.0);cout<<"兩個不相等的實

2、根"<<endl;cout<<"x1="<<x1<<",x2="<<x2<<endl;)voidequation_2(inta,intb,intc)(doublex1,x2,temp;temp=b*b-4*a*c;x1=(-b+sqrt(temp)/(2*a*1.0);x2=x1;cout<<"兩個相等的實根"<<endl;cout<<"x1="<<x1<<",x2

3、="<<x2<<endl;)voidequation_3(inta,intb,intc)(doubletemp,real1,real2,image1,image2;temp=-(b*b-4*a*c);real1=-b/(2*a*1.0);real2=real1;image1=sqrt(temp);image2=-image1;cout<<"兩個虛根"<<endl;cout<<"x1="<<real1<<"+"<<image1<

4、;<"j"<<endl;cout<<"x2="<<real2<<"+"<<image2<<"j"<<endl;)voidmain()(inta,b,c;doubletemp;cout<<"輸入a,b,c的值"<<endl;cin>>a>>b>>c;cout<<"萬程為："<<a<<"

5、x*x+"<<b<<"x+"<<c<<"=0"<<endl;temp=b*b-4*a*c;if(temp>0)equation_1(a,b,c);if(temp=0)equation_2(a,b,c);if(temp<0)equation_3(a,b,c);)定義函數(shù)up(ch)，如字符變量ch是小寫字母就轉換成大寫字母并通過up返回，否則字符ch不改變。要求在短小而完全的程序中顯示這個程序是怎樣被調(diào)用的。3. #include<iostream>usingna

6、mespacestd;charup(charc)(if(c>=97&&c<=122)return(c-32);elsereturnc;)voidmain()(inti;charc15='A','v','e','t','E',T,'%','&','4','Y','e','i','','9','A'for(i=0;i<15;i+)cou

7、t<<up(ci)<<","cout<<endl;編寫主程序條用帶實數(shù)r和整數(shù)n兩個參數(shù)的函數(shù)并輸出r的n次籍。#include<iostream.h>#include<math.h>doublepower(doublea,intb)inti;doubleresult=1.0;for(i=0;i<b;i+)result=result*a;returnresult;voidmain()doubler;intn;cout<<"r=4. cin»r;cout«"n

8、=cin»n;cout«r«"的"vvnvv”次籍是："«power(r,n)«endl;編寫有字符型參數(shù)C和整形參數(shù)N的函數(shù)，讓他們顯示出由字符C組成的三角形。其方式為第個字符C,第2行有2個字符C,等等。#include<iostream>usingnamespacestd;voidprint_triangle(charc,intn)inti,j;for(i=0;i<n;i+)for(j=0;j<=i;j+)cout«c;)cout«endl;)voidmain()p

9、rint_triangle('a',1O);)編寫一個ieqiu字符串長度的函數(shù)，strlen(),再用strlen()函數(shù)編寫一個函數(shù)revers序遞歸程序，使字符串s逆序。#include<iostream>#include<string>usingnamespacestd;intstrlen(char*str)intlen=0;while(strlen!='0')len+;)returnlen;)voidrevers(char*b)charc;intj,len;len=strlen(b);j=len/2-1;while(j>=

10、0)5. c=*(b+j);*(b+j)=*(b+len-j-1);*(b+len-j-1)=c;J-；)1行有1blen='O')voidmain()charstr="1234567890"cout«str«"一的長度："«strlen(str)«endl;cout«str«endl;/倒序前revers(str);/cout«str«endl;/倒序后)用函數(shù)模板實現(xiàn)3個數(shù)值中按最小值到最大值排序的程序。6. #include<iostream>

11、;usingnamespacestd;templatevoidsort(Ta,Tb,Tc)Tarray3,temp;inti,j;array0=a;(s)的倒array1=b;array2=c;for(i=0;i<3;i+)for(j=0;j2;j+)if(arrayj>arrayj+1)temp=arrayj;arrayj=arrayj+1;arrayj+1=temp;)cout«arrayO«array1«array2«endl;)voidmain()sort(5,1,9);)利用函數(shù)模板設計一個求數(shù)組元素中和的函數(shù)，并檢驗之。#incl

12、ude<iostream>usingnamespacestd;templateTsum(Ta,intn)inti;Ts=O;for(i=0;i<n;i+)s=s+ai;returns;)voidmain()inta5=1,2,3,4,5);ints=sum(a,5);cout«s«endl;)重載上題中的函數(shù)模板，使他能夠進行兩個數(shù)組的求和#include<iostream>usingnamespacestd;templateTsum(Ta,intn)inti;Ts=0;for(i=0;i<n;i+)s=s+ai;returns;)tem

13、plate/重載上面的模板Tsum(Ta,intn,Tb,intm)returnsum(a,n)+sum(b,m);)voidmain()inta5=1,2,3,4,5);intb10=1,2,3,4,5,6,7,8,9,10;ints1=sum(a,5);ints2=sum(b,10);ints3=sum(a,5,b,10);cout«s1«endl;cout«s2«endl;cout«s3«endl;第四章1. 設計一個點類Point,再設計一個矩形類，矩形類使用Point類的兩個坐標點作為矩形的對角頂點。并可以輸出4個坐標值和面

14、積。使用測試程序驗證程序。#includeusingnamespacestd;classPoint/點類private:intx,y;/私有成員變量，坐標public:Point()/無參數(shù)的構造方法，對xy初始化x=0;y=0；)Point(inta,intb)x=a;y=b;)voidsetXY(inta,intb)x=a;y=b;)intgetX()/得到x的方法returnx;)intgetY()/得到有的函數(shù)returny;)；classRectangle/矩形類private:Pointpoint%point2,points,point4;public:Rectangle();/類

15、Point的無參構造函數(shù)已經(jīng)對每個對象做初始化啦,這里不用對每個點多初始化了Rectangle(Pointone,Pointtwo)pointl=one;point4=two;init();)Rectangle(intx1,inty1,intx2,inty2)pointl,setXY(x1,y1);point4.setXY(x2,y2);init();voidinit()/給另外兩個點做初始化的函數(shù)point2.setXY(point4.getX(),pointl.getY();points.setXY(point1.getX(),point4.getY();voidprintPoint()/

16、)打印四個點的函數(shù)cout«"A:("«pointl.getX()«"cout«"B:("«point2.getX()«"cout«"C:("«points.getX()«"cout«"D:("«point4.getX()«","«pointl,getY()«")"«endl;,"

17、1;point2.getY()«")"«endl;,"«point3.getY()«")"«endl;,"«point4.getY()«")"«endl;)intgetArea()/計算面積的函數(shù)intheight,width,area;height=pointl.getY()-points.getY();width=pointl.getX()-point2.getX();area=height*width;if(area>0)r

18、eturnarea;elsereturn-area;)；voidmain()Pointp1(-15,56),p2(89,-10);/定義兩個點Rectangler1(p1,p2);/用兩個點做參數(shù)，聲明一個矩形對象r1Rectangler2(1,5,5,1);/用兩隊左邊，聲明一個矩形對象r2cout«"矩形r1的4個定點坐標："vvendl;r1.printPoint();cout«"矩形r1的面積："«r1,getArea()«endl;cout«"n矩形r2的4個定點坐標："vv

19、endl;r2.printPoint();cout«"矩形r2的面積："«r2.getArea()«endl;)使用內(nèi)聯(lián)函數(shù)設計一個類，用來表示直角坐標系中的任意一條直線并輸出它的屬性#include<iostream.h>#include<math.h>classLineprivate:intxl,y1,x2,y2;public:Line();Line(int=0,int=0,int=0,int=O);voidprintPoint();doublegetLength();)；inlineLine:Line(inta,i

20、ntb,intc,intd)x1=a;y1=b;x2=c;y2=d;)inlinevoidLine:printPoint()cout«"A:"«x1«","«y1«endl;cout«"B:"«x2«","«y2«endl;)inlinedoubleLine:getLength()doublelength;length=sqrt(x2-x1)*(x2-x1)+(y2-y1)*(y2-y1);returnlength;

21、)voidmain()Lineline(10,80,-10,12);line.printPoint();cout«line.getLength()«endl;第五章1. 聲明復數(shù)的類，complex,使用友元函數(shù)add實現(xiàn)復數(shù)加法。#include<iostream>usingnamespacestd;classComplexprivate:doublereal,image;public:Complex()Complex(doublea,doubleb)real=a;image=b;)voidsetRI(doublea,doubleb)real=a;image=

22、b;2. doublegetReal()returnreal;)doublegetlmage()returnimage;)voidprint()if(image>0)cout«"復數(shù)："«real«"+"«image«"i"«endl;if(image<0)cout«"復數(shù)："«real«"-"«image«"i"«endl;)friendCom

23、plexadd(Complex,Complex);/聲明友元函數(shù))；Complexadd(Complexc1,Complexc2)/定義友元函數(shù)Complexc3;c3.real=c1.real+c2.real;/訪問Complex類中的私有成員c3.image=c1.image+c2.image;returnc3;)voidmain()Complexc1(19,0.864),c2,c3;c2.setRI(90,125.012);c3=add(c1,c2);cout«"復數(shù)一："c1.print();cout«"復數(shù)二："c2.pri

24、nt();cout«"相加后："c3.print();)編寫一個程序，該程序建立一個動態(tài)數(shù)組，為動態(tài)數(shù)組的元素賦值，顯示動態(tài)數(shù)組的值并刪除動態(tài)數(shù)組。#include<iostream>usingnamespacestd;voidmain()inti,n,temp=0;cout«"輸入數(shù)組大小:"cin»n;double*array=newdoublen;/用指針，動態(tài)申請數(shù)組大小cout«"給每個數(shù)組元素賦值："vvendl;for(i=0;i<n;i+)cout«&

25、quot;array"«i«"=cin»temp;*(array+i)=temp;/給數(shù)組元素賦值)cout«"動態(tài)數(shù)組個元素的值如下："vvendl;for(i=0;ivn;i+)cout«"array"«i«"="«arrayi«endI;/打印數(shù)組元素)deletearray;/釋放內(nèi)存)3. 定義一個Dog類，它用靜態(tài)數(shù)據(jù)成員Dogs記錄Dog的個體數(shù)目，靜態(tài)成員函數(shù)GetDogs用來存取Dogs。設計并測試這個類。#

26、include<iostream>usingnamespacestd;classDogprivate:staticintdogs;/靜態(tài)數(shù)據(jù)成員，記錄Dog的個體數(shù)目public:Dog()voidsetDogs(inta)dogs=a;)staticintgetDogs()returndogs;)；intDog:dogs=25;/初始化靜態(tài)數(shù)據(jù)成員voidmain()cout«"未定義Dog類對象之前：x="«Dog:getDogs()«endl;/x在產(chǎn)生對象之前即存Doga,b;cout«"acout

27、71;"ba.setDogs(360);cout«"給對象cout«"a中x:在，輸出25«a.getDogs()«endl;"«b.getDogs()«endl;a中的x設置值后："vvendl;"«a.getDogsO«endl;cout«"b中x:"«b.getDogs()«endl;)第六章1. 設計一個基類，從基類派生圓柱，設計成員函數(shù)輸出它們的面積和體積;#include<iostream

28、>usingnamespacestd;classBasic/基類protected:doubler;publicclassCircular:publicBasic/Basic()(r=0;Basic(doublea):r(a)(從基類派生圓類(protected:doublearea;public:Circular(doublea)(r=a;area=area=3.1415926*r*r;doublegetArea()/返回圓面積(returnarea;classColumn:publicCircular/從圓類派生圓柱類(protected:doubleh;doublecubage;p

29、ublic:Column(doublea,doubleb):Circular(a)(h=b;cubage=getArea()*h;doublegetCubage()/返回圓柱體積函數(shù)returncubage;voidmain()Circularcircular(45);Columncolumn(12,10);cout<<"圓的面積:"<<circular.getArea()<<endl;cout<<"圓柱的體積:"<<column.getCubage()<<endl;3.定義一個線段

30、類作為矩形的基類，基類有起點和終點坐標，有輸出左邊和長度以及線段和成員函數(shù)。矩線段對象的兩個坐標作為自己一條邊的位置，它具有另外一條邊，能輸出矩形的標。給出類的定義并用程序驗證它們的功能。#include<iostream>#include<cmath>usingnamespacestd;classPoint/點類protected:doublex,y;public:Point()Point(doublea,doubleb)x=a;y=b;doublegetX()returnx;doublegetY()returny;classLineprotected:Pointp1

31、,p2;/Point對象做成員doublelength,angle;public:Line(doublea,doubleb,doublec,doubled):p1(a,b),p2(c,d)/用兩對坐標初始化線段init();Line(Pointa,Pointb)/用兩個點的對象初始化線段p1=a;p2=b;init();voidinit()/計算線段長度，以及和x軸的夾角的度數(shù)doublex1=p1.getX(),y1=p1.getY();doublex2=p2.getX(),y2=p2.getY();length=sqrt(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);ang

32、le=atan(y2-y1)/(x2-x1);angle=angle*180/3.141592653;voidprintXY()cout<<"("<<p1.getX()<<","<<p1.getY()<<");("<<p2.getX()<<","<<p2.getY()<<")"<<endl;x軸的夾角的4個頂點坐voidprintLength()cout<<&quo

33、t;線段長度："<<length<<endl;voidprintAngle()cout<<"與x軸的夾角："<<angle<<""<<endl;classRectangle:publicLineprotected:Line*line;public:Rectangle(doublea,doubleb,doublec,doubled,doublee,doublef,doubleg,doubleh):Line(a,b,c,d)line=newLine(e,f,g,h);)Rect

34、angle(Pointa,Pointb,Pointc,Pointd):Line(a,b)/4個點對象，初始化line=newLine(c,d);)voidprintPoint()cout«"矩形4個頂點:n"printXY();line->printXY();)；voidmain()Pointp1(0,0),p2(4,3),p3(12,89),p4(10,-50);Line11(0,0,4,3);l1.printXY();l1.printLength();printAngle();LineI2(p1,p2);printXY();l2.printLength(

35、);l2.printAngle();Rectangler1(12,45,89,10,10,23,56,1);r1.printPoint();Rectangler2(p1,p2,p3,p4);r2.printPoint();)4.基類是使用極坐標的點類，從它派生一個圓類，圓類用點類的左邊作圓心，圓周通過極坐標原點，圓類有輸出圓心直、圓半徑和面積的成員函數(shù)。完成類的設計并驗證之。#include<iostream>#include<cmath>usingnamespacestd;classPoint/點類protected:intx,y;public:Point()；cla

36、ssCircular:publicPoint/圓類，繼承點類protected:doubler,area;public:Circular(inta,intb)x=a;y=b;r=sqrt(x*x+y*y);area=3.1415926*r*r;)voidprintPoint()cout«"圓形直角坐標：("«x«","«y«")"«endl;)voidprintRadius()cout«"圓的半徑:"«r«endl;)void

37、printArea()cout«"圓的面積:"«area«endl;)；voidmain()Circularc(10,25);c.printPoint();c.printRadius();c.printArea();4. )設計一個線段基類，當創(chuàng)建五參數(shù)對象時，才要求用戶輸入長度。同樣，其派生的直角三角形類也是在產(chǎn)生對象時要求輸入兩個直角邊的長度。直角三角形在派生矩形類，矩形類的參數(shù)也由鍵盤輸入。設計這些類并測試他們的功能。#include<iostream>#include<cmath>usingnamespacest

38、d;classLine/線段基類protected:doublesizeA;public:Line()cout«"輸入線段的長度："vvendl;cin»sizeA;)Line(doublea)sizeA=a;)doublegetLength()returnsizeA;)；classTriangle:publicLine/三角形類protected:doublesizeB,sizeC;public:Triangle()cout«"輸入線段長度："vvendl;cin»sizeB;sizeC=sqrt(sizeB*s

39、izeB+sizeA*sizeA);)voidprintSize()cout«"直角三角形，三條邊分別為:cout«"A:"«sizeA«",b:"«sizeB«",C:"«sizeC«endl;)；classRectangle:publicTriangle/矩形類protected:doublesizeD;public:Rectangle()sizeC=sizeA;sizeD=sizeB;)voidprintSize()cout«&q

40、uot;矩形，四條邊分別為：cout«"A:"«sizeA«",b:"«sizeB«",C:"«sizeC«",D:"«sizeD«endl;)；voidmain()/*Line*1=newLine();cout«"線段長度為:"«l->getLength()«endl;7/*Triangle*t=newTriangle();t->printSize();7Rect

41、angle*r=newRectangle();r->printSize();)第七章1.使用類模板演示復制兼容性規(guī)則。#include<iostream>usingnamespacestd;templateclassPointprotected:Tx,y;public:Point(Ta,Tb)x=a;y=b;)voidshow()cout«"x="«x«",y="«y«endl;)；templateclassRectangle:publicPointprivate:Th,w;public

42、:Rectangle(Ta,Tb,Tc,Td):Point(a,b)h=c;w=d;)voidshow()cout«"x="«x«",y="«y«"h="«h«",w="«w«endl;)；voidmain()Pointa(3,4);Rectangleb(5.1,6.2,7.3,8.4);show();showQ;Point&ra=b;/子類對象初始化父類的引用ra.show();Point*p=&b;子類對象

43、的地址，賦給指向父類的指針p->show();Rectangle*pb=&b;/子類指針pbpb->show();a=b;/派生類對象的屬性值，更新父類對象的屬性值a.show();)2. 設計一個點的類模板，分別使用繼承、包含的方法設計線段類模板，要求演示構造函數(shù)和復制構造函數(shù)的設計方法，并用主程序驗證之。#include<iostream>usingnamespacestd;templateclassPointpublic:Tx,y;Point(Ta=0,Tb=0)x=a;y=b;)voidshow()cout«"x="

44、1;x«",y="«y«endl;)；templateclassLine_1:publicPoint/繼承Point類模板，的線段類模板protected:Tx1,y1;public:Line_1(Ta,Tb,Tc,Td):Point(a,b)x1=c;yi=d；)Line_1(constLine_1&);/復制構造函數(shù)voidshow()cout«"("«X«","«y«");("«x1«",&q

45、uot;«y1«")"«endl;);templateLine_1:Line_1(constLine_1&t):Point(t.x,t.y)x1=t.x1;y1=t.y1;)templateclassLine_2/包含point類模板，的線段類protected:Pointp1,p2;publicLine_2(Ta,Tb,Tc,Td)p1.x=a;ply=b;p2.x=c;p2.y=d;)Line_2(constLine_2&);/復制構造函數(shù)voidshow()cout«"("«p1.x

46、«","«p1.y«");("«p2.x«","«p2.y«")"«endl;)；templateLine_2:Line_2(constLine_2&t)p1=t.p1;p2=t.p2;)voidmain()Line_1L1(1,2,3,4);cout«"L1:"L1.show();Line_1L2(L1);/用現(xiàn)有的對象，初始化新對象cout«"L2:"L2.show

47、();Line_2J1(5,6,7,8);cout«"J1:"J1,show();Line_2J2(J1);cout«"J2:"J2.show();)已知有一個整型數(shù)組a,其內(nèi)容先對數(shù)組進行升序排列，再使用它產(chǎn)生向量b,然后再在向量的尾部追加11,并按降序排列輸出向量的內(nèi)容和capacity()的內(nèi)容。#include<iostream>#include<vector>#include<algorithm>usingnamespacestd;voidmain()inta=1

48、,3,5,7,9,2,4,6,8,10;sort(a,a+10);/先對數(shù)組進行升序排序copy(a,a+10,ostream_iterator(cout,"");cout«endl;vectorpa(a,a+10);/再聲明向量pa.push_back(11);/向量尾部追加11reverse_copy(pa.begin(),pa.end(),ostream_iterator(cout,"");/按降序輸出向量的內(nèi)容cout«"ncapacity:"«pa.capacity()«endl;/輸

49、出capacity。的內(nèi)容)第九章1.利用流格式控制，進行成績和名字的輸出，要求名字左對齊，分數(shù)右對齊。#include<iostream>#include<string>usingnamespacestd;classStudentprivate:stringname;floatscore;public:Student()Student(stringn,floats)name=n;score=s;)stringgetName()returnname;)floatgetScore()returnscore;)voidmain()Students1("liming

50、",98);Students2("sdfh",90);Students3("vn.fy",80);Students4("cnbtrt",70);Students5("ryuety",48);cout.width(15);cout.width(15);cout.width(15);cout.width(15);cout.width(15);cout.width(15);2. cout«left«"姓名"«right«"分數(shù)"&#

51、171;endl;cout«left«s1.getName()«right«s1.getScore()«endl;cout«left«s2.getName()«right«s2.getScore()«endl;cout«left«s3.getName()«right«s3.getScore()«endl;cout«left«s4.getName()«right«s4.getScore()«endl

52、;cout«left«s5.getName()«right«s5.getScore()«endl;編寫一個產(chǎn)生文本文件的程序。3. #include<iostream>#include<fstream>usingnamespacestd;voidmain()char*p="C+程序設計"ofstreammyFile("Worl9_5_2.txt");myFile«p;)編寫一個程序，要求輸入三角形的3條邊，然后判斷是否合理，如果不合理，給出信息并要求重新輸入;如果合理，計

53、算其面積并將結果存入文件中。#include<iostream>#include<fstream>#include<cmath>#include<vector>#include<iomanip>#include<string>usingnamespacestd;classTriangledoublesizeA,sizeB,sizeC,area;public:Triangle()voidsetArea()doublep=(sizeA+sizeB+sizeC)*0.5;area=sqrt(p*(p-sizeA)*(p-size

54、B)*(p-sizeC);)voidsetSizeA(doublea)sizeA=a;)voidsetSizeB(doubleb)sizeB=b;)voidsetSizeC(doublec)sizeC=c;)voidset(vector&);)；*/*成員函數(shù)：set/*參數(shù)：向量對象的引用II*返回值：無/*功能：為向量賦值并將向量存入文件*voidTriangle:set(vector&v)Trianglet;doublea,b,c;while(1)cout«"三角形，邊A：cin»a;if(a=-1)/結束符為-1ofstreamwriteF

55、ile;charfileName20;cout«"輸入要保存到的文件名：cin»fileName;cout«"保存到文件："vvfileName«endl;writeFile.open(fileName);if(writeFile.fail()cout«"沒有正確建立文件！"vvendl;return;)for(inti=0;i<v.size();i+)writeFile«vi.sizeA«""«vi.sizeB«"&q

56、uot;«vi.sizeC«""«vi.area«endl;writeFile.close();cout«"一共寫入"«v.size()«"個三角形信息"«endl;return;)cout«"三角形，邊B：cin»b;cout«"三角形，邊C：cin»c;if(a>0&&b>0&&c>0&&a+b>c&&a+

57、c>b&&b+c>a)t.setSizeA(a);t.setSizeB(b);t.setSizeC(c);t.setArea();v.push_back(t);)elsecout«"不能組成三角形，重新輸入”vvendl;)voidmain()vectortri;Triangletriangle;triangle.set(tri);)4. 改寫上題的程序，使程序反復計算，直到輸入結束符號為止。要求在停止計算后，詢問要保存的文件名,然后講結果一次寫入制定文件中。#include<iostream>#include<fstream>#include<cmath>#include<vector>#include<iomanip>#include<string>usingnamespacestd;classTriangledoublesizeA,sizeB,sizeC,area;public:Triangle()voidsetArea()