c大作业字符串类解读

面向对象程序设计大作业------字符串类学院名称信息科学与工程学院专业班级数学类11-2学生姓名吴亚洲学号201101051327指导教师完成时间：年代日字符串类编程目的编写一个能完成标准库函数string类的主要功能的字符串类，使我们在不调用string类库函数的情况下正常使用string类的常用构造函数、操作符、常用成员函数以及特别输入输出的实现。系统简介系统共包括string类的28个常用构造函数、操作符、常用常用成员函数以及其他四个输入输出的实现。一、构造函数(1)string()；其为默认构造函数，功能为建立一个长度为0的串。(2)string(conststring&rhs);其为复制构造函数，功能为将rhs的字符串复制给另string类的对象。(3)string(constchar*s);其功能为用指针s所指向的字符串常量初始化string类的对象。(4)string(conststring&rhs,unsignedintpos,unsignedintn);其功能为将对象rhs中的串从地址pos开始取n个字符，用来初始化string类的对象。注：串的第一个字符的地址为0。(5)string(constchar*s,unsignedintn)其功能为用指针s所指向的字符串中的前n个字符初始化string1类的对象。(6)string(unsignedintn,charc)其功能为将参数c中的字符重复n次，用来初始化string类的对象。二、string类的操作符+示例：s+t其功能为将串s和t连接成一个新串。=示例：s=t其功能为将t更新s。+=示例：s+=t其功能等价于s=s+t。==示例：s==t其功能为判断s与t可否相等。!=示例：s!=t其功能为判断s与t可否不同样。<示例：s<t其功能为判断s可否小于t。<=示例：s<=t其功能为判断s可否小于或等于t。>示例：s>t其功能为判断s可否大于t>=示例：s>=t2其功能为判断s可否大于或等于t。[]示例：s[i]其功能为接见串中下标为i的字符。三、常用成员函数(1)Stringappend(constchar*s);其功能为将字符串s增加在本串尾。(2)Stringappend(constchar*s);其功能为将s所指向的字符串赋值给本对象。(3)intcompare(conststring&str)const;其功能为比较本串与str中串的大小，当本串<str串时，返回负数；当本串>str串时，返回正数；两串相等时，返回0。(4)String&insert(unsignedintp0,constchar*s);其功能为将s所指向的字符串插入在本串地址p0从前。(5)Stringsubstr(unsignedintpos,unsignedintn)const;其功能为取子串，取本串中地址pos开始的n个字符，构成新的String类对象作为返回值。(6)unsignedintfind(constString&str)const;其功能为查找并返回str在本串中第一次出现的地址。(7)unsignedintlength()const;其功能为返回串的长度(字符个数)。(8)voidswap(string&str);其功能为将本串与str中的字符串进行交换。3四、特别输入输出(1)friendistream&operator>>(istream&cin,String&t)其功能为输入对象的字符串。(2)friendostream&operator<<(ostream&cout,constString&t)其功能为输出对象的字符串。(3)friendvoidgetline(istream&cin,String&t)其功能为输入对象的字符串。(4)friendvoidgetline(istream&cin,String&t,charas)其功能为输入对象的字符串，直到输入as字符时结束。编程思路经过利用char字符串过分来完成string类对象的所有操作，以及主要利用for、while循环来完成字符串之间的赋值以及字符串的长度、截取等。整体设计（附类图）利用多文件构造分别将类、类的实现、主函数放在三个不同样的文件里，以便其简单易懂、可分解。充分利用已知char种类的性质，经过char和循环体实现String类的各种string类常用字符串办理函数。利用构造函数的重载来实现String类的各种常用初始化。利用主函数和标准string类检验自己创立的类可否吻合string类的要求并改正。4类图String-s[MAXLEN]：char*-len：int+operator+(String&s11)：String+operator=(String&s22)：String&+operator+=(String&s33)：String&+operator==(String&s44)：bool+operator!=(String&s55)：bool+operator<(String&s66)：bool+operator<=(String&s66)：bool+operator>(String&s77)：bool+operator>=(String&s77)：bool+operator[](inta)：char&+append(constchar*s88)：String+assign(constchar*s99)：String+compare(constString&saa)const：int+insert(unsignedintpo,constchar*tt)：String&+substr(unsignedintpos,unsignedintn)const：String+find(constString&str)const：unsignedint+length()const：unsignedint+swap(String&str)：void要点技术说明经过成员函数和成员函数的重载，构造函数和构造函数的重载，友元函数，运算符的重载来完成所有string类的所有需完成成员函数。5源代码#ifndef__STRINGC_H__#define__STRINGC_H__#include<iostream>usingnamespacestd;constintMAXLEN=1000;classString{public:String();//1String(constString&rhs);//2String(char*ss);//3String(constString&rhs,unsignedintpos,unsignedintn);//4String(constchar*sbbb,unsignedintn);//5String(unsignedintn,charc);//6Stringoperator+(String&s11);//7String&operator=(String&s22);//8String&operator+=(String&s33);//9booloperator==(String&s44);//10booloperator!=(String&s55);//11booloperator<(String&s66);///12booloperator<=(String&s66);///13booloperator>(String&s77);//14booloperator>=(String&s77);//15char&operator[](inta);///16Stringappend(constchar*s88);///17Stringassign(constchar*s99);////18intcompare(constString&saa)const;////19String&insert(unsignedintpo,constchar*tt);//20Stringsubstr(unsignedintpos,unsignedintn)const;///21unsignedintfind(constString&str)const;//////22unsignedintlength()const;////23voidswap(String&str);///246friendistream&operator>>(istream&cin,String&t)////25{chara[1000];cin>>a;inti=0,j=0;while(a[i]){t.s[j++]=a[i];i++;}t.len=j;t.s[j]=0;returncin;}friendostream&operator<<(ostream&cout,constString&t)////26{cout<<t.s;returncout;}friendvoidgetline(istream&cin,String&t);////27friendvoidgetline(istream&cin,String&t,charas);/////28private:chars[MAXLEN];intlen;};#endif#include"stringc.h"#include<iostream>usingnamespacestd;String::String(){s[0]=0;len=0;}7String::String(constString&rhs)//2{inti=0;while(rhs.s[i]){s[i]=rhs.s[i];i++;}len=rhs.len;s[len]=0;}String::String(char*ss)//3{inti=0;while(ss[i]){s[i]=ss[i];i++;}len=i;s[len]=0;}String::String(constString&rhs,unsignedintpos,unsignedintn)//4{inti,j=pos;for(i=0;i<n&&rhs.s[j]!=0;i++){s[i]=rhs.s[j];j++;}len=i;s[i]=0;}String::String(constchar*sbbb,unsignedintn)//58{inti=0,j;for(j=0;j<n;j++){s[i++]=sbbb[j];}len=i;s[i]=0;}String::String(unsignedintn,charc)//6{inti=0,j=0;for(i;i<n;i++){s[j++]=c;}len=j;s[len]=0;}StringString::operator+(String&s11)//7{Strings1;inti,j,xia=0;for(i=0;i<len;i++){s1.s[xia++]=s[i];}for(j=0;j<s11.len;j++){s1.s[xia++]=s11.s[j];}s1.s[xia]=0;s1.len=len+s11.len;returns1;9}String&String::operator=(String&s22)//8{Strings2;inti,j=0;for(i=0;i<s22.len;i++){s[j++]=s22.s[i];}s[j]=0;len=s22.len;returnString(s);}String&String::operator+=(String&s33)//9{Strings3;inti=len,j;for(j=0;j<s33.len;j++){s[len++]=s33.s[j];}s[len]=0;returnString(s);}boolString::operator==(String&s44)//10{if(len!=s44.len)returnfalse;else{for(inti=0;i<len;i++){if(s[i]!=s44.s[i])returnfalse;10}returntrue;}}boolString::operator!=(String&s55)//11{if(len!=s55.len)returntrue;else{for(inti=0;i<len;i++){if(s[i]!=s55.s[i])returntrue;}returnfalse;}}boolString::operator<(String&s66)///12{if(len<s66.len){for(inti=0;i<len;i++){if(s[i]<s66.s[i])returntrue;if(s[i]>s66.s[i])returnfalse;}returntrue;}if(len>=s66.len){for(inti=0;i<s66.len;i++)11{if(s[i]>s66.s[i])returnfalse;if(s[i]<s66.s[i])returntrue;}returnfalse;}}boolString::operator<=(String&s66)///13{if(len<s66.len){for(inti=0;i<len;i++){if(s[i]<s66.s[i])returntrue;if(s[i]>s66.s[i])returnfalse;}returntrue;}if(len>s66.len){for(inti=0;i<s66.len;i++){if(s[i]>s66.s[i])returnfalse;if(s[i]<s66.s[i])returntrue;}returnfalse;}if(len==s66.len)12{for(inti=0;i<s66.len;i++){if(s[i]>s66.s[i])returnfalse;if(s[i]<s66.s[i])returntrue;}returntrue;}}boolString::operator>(String&s77)//14{if(len<=s77.len){for(inti=0;i<len;i++){if(s[i]<s77.s[i])returnfalse;if(s[i]>s77.s[i])returntrue;}returnfalse;}if(len>s77.len){for(inti=0;i<s77.len;i++){if(s[i]>s77.s[i])returntrue;if(s[i]<s77.s[i])returnfalse;}returntrue;13}}boolString::operator>=(String&s77)//15{if(len<s77.len){for(inti=0;i<len;i++){if(s[i]<s77.s[i])returnfalse;if(s[i]>s77.s[i])returntrue;}returnfalse;}if(len==s77.len){for(inti=0;i<len;i++){if(s[i]<s77.s[i])returnfalse;if(s[i]>s77.s[i])returntrue;}returntrue;}if(len>s77.len){for(inti=0;i<s77.len;i++){if(s[i]>s77.s[i])returntrue;if(s[i]<s77.s[i])returnfalse;14}returntrue;}}char&String::operator[](inta)///16{returns[a];}StringString::append(constchar*s88)///17{inti=0;while(s88[i]){s[len++]=s88[i];i++;}s[len]=0;returnString(s);}StringString::assign(constchar*s99)////18{inti=0;while(s99[i]){s[i]=s99[i];i++;}s[i]=0;len=i;returnString(s);}intString::compare(constString&saa)const////19{if(len==saa.len)15{for(inti=0;i<saa.len;i++){if(s[i]>saa.s[i])return1;if(s[i]<saa.s[i])return-1;}return0;}if(len>saa.len){for(inti=0;i<saa.len;i++){if(s[i]>saa.s[i])return1;if(s[i]<saa.s[i])return-1;}return1;}if(len<saa.len){for(inti=0;i<len;i++){if(s[i]>saa.s[i])return1;if(s[i]<saa.s[i])return-1;}return-1;}}String&String::insert(unsignedintpo,constchar*tt)//2016{chara[1000];inti,j=0,k=0,l=0,m=po;for(i=po;i<len;i++){a[j++]=s[i];}a[j]=0;while(tt[k]){s[m++]=tt[k];k++;}while(a[l]){s[m++]=a[l];l++;}s[m]=0;len=m;returnString(s);}StringString::substr(unsignedintpos,unsignedintn)const///21{Stringt;inti=0,j=pos;for(j=pos;j<pos+n;j++){t.s[i++]=s[j];}t.len=i;t.s[i]=0;returnt;}17unsignedintString::find(constString&str)const//////22{intm=0,j;for(j=0;j<len;){intk=j,i=0,xxx=0;for(j;j<k+str.len;j++){if(s[j]!=str.s[i++]){xxx=1;break;}}if(xxx==0){m++;j=k+str.len;}elsej++;}returnm;}unsignedintString::length()const////23{returnlen;}voidString::swap(String&str)///24{charaaa[1000];inti=0,j=0,l=str.len;while(s[i]){18aaa[j++]=s[i];i++;}aaa[j]=0;i=0;j=0;while(str.s[i]){s[j++]=str.s[i];i++;}s[j]=0;i=0;j=0;while(aaa[i]){str.s[j++]=aaa[i];i++;}str.s[j]=0;str.len=len;len=l;}voidgetline(istream&cin,String&t)////27{chara[1000];cin>>a;inti=0,j=0;while(a[i]){t.s[j++]=a[i];i++;}t.len=j;19t.s[j]=0;}voidgetline(istream&cin,String&t,charas)/////28{inti=0;chara;for(;;){cin>>a;if(a==as)break;elset.s[i++]=a;}t.s[i]=0;t.len=i;}#include"stringc.h"#include<iostream>usingnamespacestd;intmain(){cout<<"String()的实现"<<endl;Stringa1;cout<<"a1字符串及其长度"<<endl;cout<<"字符串为:"<<a1<<endl<<"字符长度为:"<<a1.length()<<endl;cout<<"String(constString&rhs)的实现"<<endl;Stringa2="asdf",a3(a2);cout<<"a2字符串及其长度"<<endl;cout<<"字符串为:"<<a2<<endl<<"字符长度为:"<<a2.length()<<endl;cout<<"a3(a2)字符串及其长度"<<endl;cout<<"字符串为:"<<a3<<endl<<"字符长度20为:"<<a3.length()<<endl;cout<<"String(char*ss)的实现"<<endl;charb1[10]="abcde";cout<<"b1字符串"<<endl;cout<<b1<<endl;Stringa4(b1);cout<<"a4(b1)字符串及其长度"<<endl;cout<<"字符串为:"<<a4<<endl<<"字符长度为:"<<a4.length()<<endl;cout<<"String(constString&rhs,unsignedintpos,unsignedintn)的实现"<<endl;Stringa5="abcdef",a6(a5,1,4),a7(a5,3,3),a8(a5,3,5);cout<<"a5字符串及其长度"<<endl;cout<<"字符串为:"<<a5<<endl<<"字符长度为:"<<a5.length()<<endl;cout<<"a6(a5,1,4)字符串及其长度"<<endl;cout<<"字符串为:"<<a6<<endl<<"字符长度为:"<<a6.length()<<endl;cout<<"a7(a5,3,3)字符串及其长度"<<endl;cout<<"字符串为:"<<a7<<endl<<"字符长度为:"<<a7.length()<<endl;cout<<"a8(a5,3,5)字符串及其长度"<<endl;cout<<"字符串为:"<<a8<<endl<<"字符长度为:"<<a8.length()<<endl;cout<<"String(constchar*sbbb,unsignedintn)的实现"<<endl;charb2[10]="abcdef";Stringa9(b2,4),a10(b2,8);cout<<"a9(b2,4)字符串及其长度"<<endl;cout<<"字符串为:"<<a9<<endl<<"字符长度为:"<<a9.length()<<endl;cout<<"a10(b2,8)字符串及其长度"<<endl;cout<<"字符串为:"<<a10<<endl<<"字符长度为:"<<a10.length()<<endl;cout<<"String(unsignedintn,charc)的实现"<<endl;21charb3='d';Stringa11(5,b3);cout<<"b3的字符:"<<b3<<endl;cout<<"a11字符串及其长度"<<endl;cout<<"字符串为:"<<a11<<endl<<"字符长度为:"<<a11.length()<<endl;cout<<"+的实现"<<endl;Stringa12="abcd",a13="efg",a14;a14=a12+a13;cout<<"a12字符串及其长度"<<endl;cout<<"字符串为:"<<a12<<endl<<"字符长度为:"<<a12.length()<<endl;cout<<"a13字符串及其长度"<<endl;cout<<"字符串为:"<<a13<<endl<<"字符长度为:"<<a13.length()<<endl;cout<<"a14=a12+a13字符串及其长度"<<endl;cout<<"字符串为:"<<a14<<endl<<"字符长度为:"<<a14.length()<<endl;cout<<"=的实现"<<endl;Stringa15="asdfg",a16;a16=a15;cout<<"a15字符串及其长度"<<endl;cout<<"字符串为:"<<a15<<endl<<"字符长度为:"<<a15.length()<<endl;cout<<"a16=a15字符串及其长度"<<endl;cout<<"字符串为:"<<a16<<endl<<"字符长度为:"<<a16.length()<<endl;cout<<"+=的实现"<<endl;Stringa17="abcde",a18="fgh";cout<<"a17字符串及其长度"<<endl;cout<<"字符串为:"<<a17<<endl<<"字符长度为:"<<a17.length()<<endl;cout<<"a18字符串及其长度"<<endl;cout<<"字符串为:"<<a18<<endl<<"字符长度22为:"<<a18.length()<<endl;a17+=a18;cout<<"a17+=a18字符串及其长度"<<endl;cout<<"字符串为:"<<a17<<endl<<"字符长度为:"<<a17.length()<<endl;cout<<"==的实现"<<endl;Stringa19="abcde",a20="abcde",a21="abcdef";cout<<"a19字符串为:"<<a19<<endl;cout<<"a20字符串为:"<<a20<<endl;cout<<"a21字符串为:"<<a21<<endl;cout<<"a19与a20可否相等"<<endl;if(a19==a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19与a21可否相等"<<endl;if(a19==a21)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"!=的实现"<<endl;cout<<"a19与a20可否不相等"<<endl;if(a19!=a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19与a21可否不相等"<<endl;if(a19!=a21)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"<的实现"<<endl;cout<<"a19可否小于a20"<<endl;if(a19<a20)23cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19可否小于a21"<<endl;if(a19<a21)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"<=的实现"<<endl;cout<<"a19可否小于等于a20"<<endl;if(a19<=a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19可否小于等于a21"<<endl;if(a19<=a21)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<">的实现"<<endl;cout<<"a19可否大于a20"<<endl;if(a19>a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19可否大于a21"<<endl;if(a19>a21)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<">=的实现"<<endl;cout<<"a19可否大于等于a20"<<endl;if(a19>=a20)cout<<"是"<<endl;24elsecout<<"否"<<endl;cout<<"a19可否大于等于a21"<<endl;if(a19>=a21)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"[]的实现"<<endl;Stringa22="abcd";cout<<"a22字符串为:"<<a22<<endl;cout<<"a22[2]的字符:"<<a22[2]<<endl;Stringa23="abcd";charb4[10]="efg";cout<<"Stringappend(constchar*s88)的实现"<<endl;cout<<"b4字符串"<<endl<<b4<<endl;cout<<"a23字符串及其长度"<<endl;cout<<"字符串为:"<<a23<<endl<<"字符长度为:"<<a23.length()<<endl;a23.append(b4);cout<<"a23.append(b4)字符串及其长度"<<endl;cout<<"字符串为:"<<a23<<endl<<"字符长度为:"<<a23.length()<<endl;Stringa24;charb5[10]="efgh";cout<<"Stringassign(constchar*s99)的实现"<<endl;cout<<"b5字符串"<<endl<<b5<<endl;cout<<"a24字符串及其长度"<<endl;a24.assign(b5);cout<<"字符串为:"<<a24<<endl<<"字符长度为:"<<a24.length()<<endl;Stringa25="efgh",a26="efgh",a27="efgi",a28="efgg";cout<<"Stringassign(constchar*s99)的实现"<<endl;cout<<"a25字符串:"<<a25<<endl;cout<<"a26字符串:"<<a26<<endl;25cout<<"a27字符串:"<<a27<<endl;cout<<"比较a25与a26的大小"<<endl;cout<<pare(a26)<<endl;cout<<"比较a25与a27的大小"<<endl;cout<<pare(a27)<<endl;cout<<"比较a25与a28的大小"<<endl;cout<<pare(a28)<<endl;Stringa29="abcde";charb6[10]="hij";cout<<"String&insert(unsignedintpo,constchar*tt)的实现"<<endl;cout<<"b6字符串:"<<b6<<endl;cout<<"a29字符串及其长度"<<endl;cout<<"字符串为:"<<a29<<endl<<"字符长度为:"<<a29.length()<<endl;a29.insert(2,b6);cout<<"a29.insert(2,b6)字符串及其长度"<<endl;cout<<"字符串为:"<<a29<<endl<<"字符长度为:"<<a29.length()<<endl;Stringa30="abcdefg",a31;cout<<"Stringsubstr(unsignedintpos,unsignedintn)const的实现"<<endl;cout<<"a29字符串及其长度"<<endl;cout<<"字符串为:"<<a30<<endl<<"字符长度为:"<<a30.length()<<endl;a31=a30.substr(2,4);cout<<"a31=a30.substr(2,4)字符串及其长度"<<endl;cout<<"字符串为:"<<a31<<endl<<"字符长度为:"<<a31.length()<<endl;Stringa32="abcdefgabcdefg",a33="bc",a34="fg";cout<<"unsignedintfind(constString&str)const的实现"<<endl;cout<<"a32字符串:"<<a32<<endl;cout<<"a33字符串:"<<a33<<endl;cout<<"a34字符串:"<<a34<<endl;cout<<"a33在a32首次出现的地址"<<endl;26cout<<a32.find(a33)<<endl;cout<<"a34在a32首次出现的地址"<<endl;cout<<a32.find(a34)<<endl;Stringa35="abcdef",a36="bc",a37;cout<<"unsignedintlength()const的实现"<<endl;cout<<"a35字符串:"<<a35<<endl;cout<<"a36字符串:"<<a36<<endl;cout<<"a37字符串:"<<a37<<endl;cout<<"a35的长度"<<endl;cout<<a35.length()<<endl;cout<<"a36的长度"<<endl;cout<<a36.length()<<endl;cout<<"a37的长度"<<endl;cout<<a37.length()<<endl;Stringa38="abcdefg",a39="abc";cout<<"voidswap(String&str)的实现"<<endl;cout<<"a38字符串及其长度"<<endl;cout<<"字符串为:"<<a38<<endl<<"字符长度为:"<<a38.length()<<endl;cout<<"a39字符串及其长度"<<endl;cout<<"字符串为:"<<a39<<endl<<"字符长度为:"<<a39.length()<<endl;a38.swap(a39);cout<<"经过swap()交换后的a38与a39的字符串及其长度"<<endl;cout<<"a38字符串及其长度"<<endl;cout<<"字符串为:"<<a38<<endl<<"字符长度为:"<<a38.length()<<endl;cout<<"a39字符串及其长度"<<endl;cout<<"字符串为:"<<a39<<endl<<"字符长度为:"<<a39.length()<<endl;Stringa40,a41;cout<<"cin>>的实现"<<endl;cout<<"请输入a40的字符串"<<endl;cin>>a40;27cout<<"请输入a41的字符串"<<endl;cin>>a41;cout<<"cout<<的实现"<<endl;cout<<"a40的输出"<<endl;cout<<a40<<endl;cout<<"a41的输出"<<endl;cout<<a41<<endl;Stringa42;cout<<"getline(istream&cin,String&t)的实现"<<endl;cout<<"请输入a42的字符串"<<endl;getline(cin,a42);cout<<"a42字符串及其长度"<<endl;cout<<"字符串为:"<<a42<<endl<<"字符长度为:"<<a42.length()<<endl;Stringa43,a44;cout<<"getline(istream&cin,String&t,charas)的实现"<<endl;charb7=',',b8='f';cout<<"b7的字符:"<<b7<<endl;cout<<"请输入a43的字符串"<<endl;getline(cin,a43,b7);cout<<"a42字符串及其长度"<<endl;cout<<"字符串为:"<<a43<<endl<<"字符长度为:"<<a43.length()<<endl;cout<<"b8的字符:"<<b8<<endl;cout<<"请输入a44的字符串"<<endl;getline(cin,a44,b8);cout<<"a42字符串及其长度"<<endl;cout<<"字符串为:"<<a44<<endl<<"字符长度为:"<<a44.length()<<endl;return0;}测试（主界面及各功能模块的运行图及说明）的实现28cout<<"String()的实现"<<endl;Stringa1;cout<<"a1字符串及其长度"<<endl;cout<<"字符串为:"<<a1<<endl<<"字符长度为:"<<a1.length()<<endl;的实现cout<<"String(constString&rhs)的实现"<<endl;Stringa2="asdf",a3(a2);cout<<"a2字符串及其长度"<<endl;cout<<"字符串为:"<<a2<<endl<<"字符长度为:"<<a2.length()<<endl;cout<<"a3(a2)字符串及其长度"<<endl;cout<<"字符串为:"<<a3<<endl<<"字符长度为:"<<a3.length()<<endl;的实现cout<<"String(char*ss)的实现"<<endl;charb1[10]="abcde";cout<<"b1字符串"<<endl;cout<<b1<<endl;Stringa4(b1);cout<<"a4(b1)字符串及其长度"<<endl;cout<<"字符串为:"<<a4<<endl<<"字符长度29为:"<<a4.length()<<endl;的实现cout<<"String(constString&rhs,unsignedintpos,unsignedintn)的实现"<<endl;Stringa5="abcdef",a6(a5,1,4),a7(a5,3,3),a8(a5,3,5);cout<<"a5字符串及其长度"<<endl;cout<<"字符串为:"<<a5<<endl<<"字符长度为:"<<a5.length()<<endl;cout<<"a6(a5,1,4)字符串及其长度"<<endl;cout<<"字符串为:"<<a6<<endl<<"字符长度为:"<<a6.length()<<endl;cout<<"a7(a5,3,3)字符串及其长度"<<endl;cout<<"字符串为:"<<a7<<endl<<"字符长度为:"<<a7.length()<<endl;cout<<"a8(a5,3,5)字符串及其长度"<<endl;cout<<"字符串为:"<<a8<<endl<<"字符长度为:"<<a8.length()<<endl;的实现30cout<<"String(constchar*sbbb,unsignedintn)的实现"<<endl;charb2[10]="abcdef";Stringa9(b2,4),a10(b2,8);cout<<"a9(b2,4)字符串及其长度"<<endl;cout<<"字符串为:"<<a9<<endl<<"字符长度为:"<<a9.length()<<endl;cout<<"a10(b2,8)字符串及其长度"<<endl;cout<<"字符串为:"<<a10<<endl<<"字符长度为:"<<a10.length()<<endl;的实现cout<<"String(unsignedintn,charc)的实现"<<endl;charb3='d';Stringa11(5,b3);cout<<"b3的字符:"<<b3<<endl;cout<<"a11字符串及其长度"<<endl;cout<<"字符串为:"<<a11<<endl<<"字符长度为:"<<a11.length()<<endl;的实现cout<<"+的实现"<<endl;Stringa12="abcd",a13="efg",a14;a14=a12+a13;31cout<<"a12字符串及其长度"<<endl;cout<<"字符串为:"<<a12<<endl<<"字符长度为:"<<a12.length()<<endl;cout<<"a13字符串及其长度"<<endl;cout<<"字符串为:"<<a13<<endl<<"字符长度为:"<<a13.length()<<endl;cout<<"a14=a12+a13字符串及其长度"<<endl;cout<<"字符串为:"<<a14<<endl<<"字符长度为:"<<a14.length()<<endl;的实现cout<<"=的实现"<<endl;Stringa15="asdfg",a16;a16=a15;cout<<"a15字符串及其长度"<<endl;cout<<"字符串为:"<<a15<<endl<<"字符长度为:"<<a15.length()<<endl;cout<<"a16=a15字符串及其长度"<<endl;cout<<"字符串为:"<<a16<<endl<<"字符长度为:"<<a16.length()<<endl;329的实现cout<<"+=的实现"<<endl;Stringa17="abcde",a18="fgh";cout<<"a17字符串及其长度"<<endl;cout<<"字符串为:"<<a17<<endl<<"字符长度为:"<<a17.length()<<endl;cout<<"a18字符串及其长度"<<endl;cout<<"字符串为:"<<a18<<endl<<"字符长度为:"<<a18.length()<<endl;a17+=a18;cout<<"a17+=a18字符串及其长度"<<endl;cout<<"字符串为:"<<a17<<endl<<"字符长度为:"<<a17.length()<<endl;的实现cout<<"==的实现"<<endl;Stringa19="abcde",a20="abcde",a21="abcdef";cout<<"a19字符串为:"<<a19<<endl;cout<<"a20字符串为:"<<a20<<endl;cout<<"a21字符串为:"<<a21<<endl;cout<<"a19与a20可否相等"<<endl;if(a19==a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19与a21可否相等"<<endl;33if(a19==a21)cout<<"是"<<endl;elsecout<<"否"<<endl;的实现cout<<"!=的实现"<<endl;cout<<"a19与a20可否不相等"<<endl;if(a19!=a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19与a21可否不相等"<<endl;if(a19!=a21)cout<<"是"<<endl;elsecout<<"否"<<endl;的实现cout<<"<的实现"<<endl;cout<<"a19可否小于a20"<<endl;if(a19<a20)cout<<"是"<<endl;34elsecout<<"否"<<endl;cout<<"a19可否小于a21"<<endl;if(a19<a21)cout<<"是"<<endl;elsecout<<"否"<<endl;的实现cout<<"<=的实现"<<endl;cout<<"a19可否小于等于a20"<<endl;if(a19<=a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19可否小于等于a21"<<endl;if(a19<=a21)cout<<"是"<<endl;elsecout<<"否"<<endl;的实现cout<<">的实现"<<endl;35cout<<"a19可否大于a20"<<endl;if(a19>a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19可否大于a21"<<endl;if(a19>a21)cout<<"是"<<endl;elsecout<<"否"<<endl;的实现cout<<">=的实现"<<endl;cout<<"a19可否大于等于a20"<<endl;if(a19>=a20)cout<<"是"<<endl;elsecout<<"否"<<endl;cout<<"a19可否大于等于a21"<<endl;if(a19>=a21)cout<<"是"<<endl;elsecout<<"否"<<endl;36的实现cout<<"[]的实现"<<endl;Stringa22="abcd";cout<<"a22字符串为:"<<a22<<endl;cout<<"a22[2]的字符:"<<a22[2]<<endl;的实现Stringa23="abcd";charb4[10]="efg";cout<<"Stringappend(constchar*s88)的实现"<<endl;cout<<"b4字符串"<<endl<<b4<<endl;cout<<"a23字符串及其长度"<<endl;cout<<"字符串为:"<<a23<<endl<<"字符长度为:"<<a23.length()<<endl;a23.append(b4);cout<<"a23.append(b4)字符串及其长度"<<endl;cout<<"字符串为:"<<a23<<endl<<"字符长度为:"<<a23.length()<<endl;37的实现Stringa24;charb5[10]="efgh";cout<<"Stringassign(constchar*s99)的实现"<<endl;cout<<"b5字符串"<<endl<<b5<<endl;cout<<"a24字符串及其长度"<<endl;a24.assign(b5);cout<<"字符串为:"<<a24<<endl<<"字符长度为:"<<a24.length()<<endl;的实现Stringa25="efgh",a26="efgh",a27="efgi",a28="efgg";cout<<"Stringassign(constchar*s99)的实现"<<endl;cout<<"a25字符串:"<<a25<<endl;cout<<"a26字符串:"<<a26<<endl;cout<<"a27字符串:"<<a27<<endl;cout<<"比较a25与a26的大小"<<endl;cout<<pare(a26)<<endl;cout<<"比较a25与a27的大小"<<endl;cout<<pare(a27)<<endl;cout<<"比较a25与a28的大小"<<endl;cout<<pare(a28)<<endl;38的实现Stringa29="abcde";charb6[10]="hij";cout<<"String&insert(unsignedintpo,constchar*tt)的实现"<<endl;cout<<"b6字符串:"<<b6<<endl;cout<<"a29字符串及其长度"<<endl;cout<<"字符串为:"<<a29<<endl<<"字符长度为:"<<a29.length()<<endl;a29.insert(2,b6);cout<<"a29.insert(2,b6)字符串及其长度"<<endl;cout<<"字符串为:"<<a29<<endl<<"字符长度为:"<<a29.length()<<endl;的实现Stringa30="abcdefg",a31;cout<<"Stringsubstr(unsignedintpos,unsignedintn)const的实现"<<endl;cout<