字符串类型下载_Word模板_11

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字符串类型字符串类型 #include #include #include class string{ unsigned len;//??ÖÐ×Ö?û?öÊý unsigned maxlen;//×î?ó×Ö?û?öÊý char *str; public: string(const char *a); string( string &a); string(){maxlen=10;len=0;str=new char [maxlen+1];} ~string(){delete []str;} string op...

字符串类型 #include #include #include class string{ unsigned len;//??ÖÐ×Ö?û?öÊý unsigned maxlen;//×î?ó×Ö?û?öÊý char *str; public: string(const char *a); string( string &a); string(){maxlen=10;len=0;str=new char [maxlen+1];} ~string(){delete []str;} string operator+(const string &b); string operator+(const char *b); friend string operator+(const char *a,const string &b); string operator=(const string &b); string operator-(const string &b); string operator-(const char *b); friend string operator-(char *b,const string &a); friend string operator-(char a,const string &b); char * findsub(const string &b); char * findsub(const char *b); int seeksub(const string &b); int seeksub(const char *b); int replacesub(const string &b,const string &c); int replacesub(const char *b,const char *c); int replacesub(const string &b,const char *c); int replacesub(const char *b,const string &c); int size(){return len;} friend ostream & operator<<(ostream &out,const string &a) { out<>(istream &in,string &a) { a.len=-1; do { a.len++; a.str[a.len]=in.get(); if(a.len==a.maxlen) { char *p=new char [a.len]; strncpy(p,a.str,a.len+1); delete []a.str; a.maxlen=2*a.len; a.str=new char[a.maxlen+1]; strncpy(a.str,p,a.len+1); } }while(a.str[a.len]!=' '&&a.str[a.len]!='\n'); a.str[a.len]='\0'; return in; } }; string::string(const char *a) { len=strlen(a); maxlen=2*len; str=new char[maxlen+1]; strcpy(str,a); } string::string(string &a) { len=a.len; maxlen=a.maxlen; str=new char[maxlen+1]; strcpy(str,a.str); } string string::operator+(const char *b) { char *p=new char[len+strlen(b)+1]; strcpy(p,str); strcat(p,b); return string(p); } string string::operator +(const string &b) { return *this+b.str; } string operator+(const char *a,const string &b) { string aa(a); return aa+b.str; } string string::operator-(const char *b) { unsigned len1=strlen(b); unsigned sublen; char *p,*sub,*q; if(lenreplacesub(b.str,c.str); } int string::replacesub(const string &b,const char *c) { return this->replacesub(b.str,c); } int string::replacesub(const char *b,const string &c) { return this->replacesub(b,c.str); } int string::seeksub(const char *b) { char *p; p=this->findsub(b); if(p) return (p-this->str); else return 0; } int string::seeksub(const string &b) { return this->seeksub(b.str); } void main() { string a("I like C++ !"); char bb[]="I think you too,are you?"; string b(bb); string c(a); string d("like"); char *p; cout<<"a="<>ef; cout<<"ÄúÊäÈëµÄ×Ö?û??Îª:"<

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