Some uses of C + + on string

#include <iostream>#include<algorithm>#include<functional>using namespacestd; classteststring { Public:            voidToupper (string& str);//Turn Capital    voidTolower (string& str);//Turn lowercase    voidTrimRight (string& str);//Remove the space behind    voidTrimleft (string& str);//Remove the preceding space    voidDeletechar (string& STR,CharCH);//remove a character from the string, and note that it's all removed .    voidTestreplace ();//Replace a character in a string such as abcdef to replace AB with a CD    BOOLStartwith (Const string& STR,Const string& Strstart);//string begins with a paragraph    BOOLEndwith (Const string& STR,Const string& Strend);//string ends with a paragraph    voidTestreverse ();//Flip String}; voidTeststring::toupper (string&str)  {Transform (Str.begin (), Str.end (), Str.begin (),:: ToUpper); }    voidTeststring::tolower (string&str)  {Transform (Str.begin (), Str.end (), Str.begin (),:: ToLower); }    voidTeststring::trimleft (string&str) {Str.erase (0, Str.find_first_not_of (' ')); }  voidTeststring::trimright (string&str) {Str.erase (str.find_last_not_of (' ')+1); }    voidTestString::D Eletechar (string& STR,Charch) {Str.erase (remove_if (Str.begin (), Str.end (), bind2nd (equal_to<Char>(), ch)), str.end ()); }    voidTeststring::testreplace () {stringstr ="abcdef"; stringStrsub ="AB"; Str.replace (Str.find (strsub), Strsub.size (),"CD"); cout<<str.c_str () <<Endl; }    BOOLTeststring::startwith (Const string& STR,Const string&Strstart) {      if(Str.empty () | |Strstart.empty ()) {          return false; }        returnStr.compare (0, Strstart.size (), strstart) = =0?true:false; }    BOOLTeststring::endwith (Const string& STR,Const string&strend) {      if(Str.empty () | |Strend.empty ()) {          return false; }      returnStr.compare (Str.size ()-strend.size (), Strend.size (), strend) = =0?true:false; }    //The process of flipping Chinese characters will appear garbled, because the method is flipped by CharvoidTeststring::testreverse () {stringSTR1 ="Zhang Dongxhen";      Std::reverse (Str1.begin (), Str1.end ()); stringSTR2 ="";    Str2.assign (Str1.rbegin (), Str1.rend ()); }  

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Some uses of C + + on string