运算符重载string运算符.docx

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1、运算符重载#include#include"FunnyString.h"usingstd::istream;usingstd::ostream;usingstd::string;usingstd::cout;usingstd::cin;usingstd::endl;intmain(){FunnyStringstring1,string2;cout<<"Pleaseinputs1:";cin>>string1;cout<<"Pleaseinputs2:";cin>>string2;cout<<"未

2、进行s1-=s2运算时的s1*s2is"<

3、2is"<

4、newchar[length+1];if(a!=0)strcpy(sPtr,a);elsesPtr[0]='';}FunnyString::FunnyString(constchar*first):length((first!=0)?strlen(first):0){setFunnyString(first);}FunnyString::FunnyString(constFunnyString&a){length=a.length;sPtr=newchar[length+1];for(inti=0;i

5、th;i++)sPtr[i]=a.sPtr[i];}intFunnyString::getLength()const{returnlength;}FunnyString::~FunnyString(){delete[]sPtr;}ostream&operator<<(ostream&output,constFunnyString&a){for(inti=0;i>(istream&input,

6、FunnyString&a){charb[100];input>>b;a.length=strlen(b);delete[]a.sPtr;a.sPtr=newchar[a.length+1];for(inti=0;i

7、nnyString(a.sPtr);return*this;}elsereturn*this;}constFunnyString&FunnyString::operator+=(constFunnyString&a){FunnyStringc;c=*this+a;*this=c;return*this;}constFunnyString&FunnyString::operator-=(constFunnyString&a){FunnyStringc;c=*this-a;*this=c;return*this;}co

8、nstFunnyStringoperator+(constFunnyString&left,constFunnyString&right){intlen=left.length+right.length;char*a=newchar[len+1];a[1]=left.sPtr[1];for(inti=0;i