结论:C语言风格字符串使用麻烦,需要自己分配空间,就连最简单的字串连接操作还要担心是否越界,而string类只要用“加法+”就行了。所以不建议用<cstring>字符串,强烈推荐使用string类,头文件<string>,Dev-C++中可以不用#include。后者字符串操作函数比较丰富,且使用方便:strlen(s) <=> s.length() 或 s.siz
int length()const; //返回当前字符串的长度 bool empty()const; //当前字符串是否为空 void resize(int len,char c);//把字符串当前大小置为len,并用字符c填充不足的部分 string类的输入输出操作: string类重载运算符operator>>用于输入,同样重载运算符operator<<用于输出操作。 函数getline(istream &in,str...
CString(typedef CStringT<TCHAR, StrTraitMFC<TCHAR>> CString)为Visual C++中最常用的字符串类,继承自CSimpleStringT类,主要应用在MFC和ATL编程中,主要数据类型有char(应用于ANSI),wchar_t(unicode),TCHAR(ANSI与unicode均可); char*为C编程中最常用的字符串指针,一般以’\0’为结束标志; (二) 构造 ² strin...
CString.format("%s", string.c_str()); char 转 CString CString.format("%s", char*); char 转 string string s(char *); string 转 char * char *p = string.c_str(); CString 转 string string s(CString.GetBuffer()); 1,string -> CString CString.format("%s", string.c_str()); 用c...
CString a = "abcde"; CString b = "abc"; CString c = "efg"; int v1 = a.compareTo(b); //v1为a.length()-b.length() int v2 = a.compareTo(c); //v2为'a' - 'e' int v3 = a.compareTo("abcde"); //v3为0 int compareToIgnoreCase(CString anotherString) 比较两个字符串,返回...
CString( LPCTSTR lpch, int nLength ); CString( const unsigned char* psz ); CString( LPCWSTR lpsz ); CString( LPCSTR lpsz ); 例子最容易说明问题 CString s1; CString s2( "cat" ); CString s3 = s2; CString s4( s2 + " " + s3 ); ...
_bstr_t t = ws.c_str(); char* pchar = (char*)t; string result = pchar; return result; } 3》string转cstring a)CString.format("%s", string.c_str()); b)CString StringToCString(string str) { CString result; for (int i=0;i<(int)str.length();i++) ...
convenience init?(CString: UnsafePointer<CChar>, length: Int)Deprecated M convenience init?(CStringNoCopy: UnsafeMutablePointer<CChar>, length: Int, freeWhenDone: Bool)Deprecated M class func string(withContentsOfFile: String) -> Any?Deprecated M convenience init?(contentsOfFile: String)Deprec...
//c_str=str.data(); //cout<<"string is "<<str<<endl; //cout<<"const char is"<<c_str<<endl;*/ //string 直接转换成char* ///*string s1 = "abcdefg"; //char *data; //int len = s1.length(); //data = (char *)malloc((len)*sizeof(char)); ...
该函数用另外的字符来代替原来的字符。第一种形态,用chNew就地取代chOld。第二种形态,用lpszNew来取代原对象的子链lpszOld。 The string may grow or shrink as a result of the replacement; that is, lpszNew and lpszOld do not have to be equal in length. Both versions perform case-sensitive ma...