1 #include <string> 2 // 使用CString必须使用MFC,并且不可包含3 #define _AFXDLL 4 #include 5 using namespace std; 6 //———————————————————————————- 7 //将 单字节char* 转换为 宽字节 wchar* 8 inline wchar_t* AnsiToUnicode( const char* szStr ) 9 { 10 int nLen = MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szStr, -1, NULL, 0 ); 11 if (nLen == 0) 12 { 13 return NULL; 14 } 15 wchar_t* pResult = new wchar_t[nLen]; 16 MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szStr, -1, pResult, nLen ); 17 return pResult; 18 } 19 //———————————————————————————- 20 // 将 宽字节wchar_t* 转换 单字节char* 21 inline char* UnicodeToAnsi( const wchar_t* szStr ) 22 { 23 int nLen = WideCharToMultiByte( CP_ACP, 0, szStr, -1, NULL, 0, NULL, NULL ); 24 if (nLen == 0) 25 { 26 return NULL; 27 } 28 char* pResult = new char[nLen]; 29 WideCharToMultiByte( CP_ACP, 0, szStr, -1, pResult, nLen, NULL, NULL ); 30 return pResult; 31 } 32 //———————————————————————————- 33 // 将单字符 string 转换为宽字符 wstring 34 inline void Ascii2WideString( const std::string& szStr, std::wstring& wszStr ) 35 { 36 int nLength = MultiByteToWideChar( CP_ACP, 0, szStr.c_str(), -1, NULL, NULL ); 37 wszStr.resize(nLength); 38 LPWSTR lpwszStr = new wchar_t[nLength]; 39 MultiByteToWideChar( CP_ACP, 0, szStr.c_str(), -1, lpwszStr, nLength ); 40 wszStr = lpwszStr; 41 delete [] lpwszStr; 42 } 43 //———————————————————————————- 44 int _tmain(int argc, _TCHAR* argv[]) 45 { 46 char* pChar = “我喜欢char”; 47 wchar_t* pWideChar = L”我讨厌wchar_t”; 48 wchar_t tagWideCharList[100] ; 49 char ch = ‘A’; 50 char tagChar[100] = {NULL}; 51 CString cStr; 52 std::string str; 53 54 // 注:设置语言环境以便输出WideChar 55 setlocale(LC_ALL,”chs”); 56 57 // 注: char* 转换 wchar_t* 58 // 注: wchar_t 未重载 << ,所以不可使用 cout << 输出 59 pWideChar = AnsiToUnicode( pChar ); 60 // 注:printf(”%ls”) 和 wprintf(L”%s”) 一致 61 printf( “%ls\n”, pWideChar ); 62 63 // 注:wchar_t* 转换 wchar_t[] 64 wcscpy ( tagWideCharList, pWideChar ); 65 wprintf( L”%s\n”, tagWideCharList ); 66 67 // 注:wchar_t[] 转换 wchar_t* 68 pWideChar = tagWideCharList; 69 wprintf( L”%s\n”, pWideChar ); 70 71 // 注:char 转换 string 72 str.insert( str.begin(), ch ); 73 cout << str << endl; 74 75 // 注:wchar_t* 转换 string 76 pWideChar = new wchar_t[str.length()]; 77 swprintf( pWideChar, L”%s”, str.c_str()); 78 wprintf( L”%s\n”, pWideChar ); 79 80 // 注:string 转换 char* 81 pChar = const_cast<char*>(str.c_str()); 82 cout << pChar << endl; 83 84 // 注:char* 转换 string 85 str = std::string(pChar); 86 // 注: cout 的 << 重载了string, 若printf 的话必须 printf(”%s”, str.c_str()); 87 // 而不可 print( “%s”, str ); 因为 str 是个 string 类 88 cout << str << endl; 89 90 // 注:string 转换 char[] 91 str = “无聊啊无聊”; 92 strcpy( tagChar, str.c_str() ); 93 printf( “%s\n”, tagChar ); 94 95 // 注:string 转换 CString; 96 cStr = str.c_str(); 97 98 // 注:CString 转换 string 99 str = string(cStr.GetBuffer(cStr.GetLength())); 100 101 // 注:char* 转换 CString 102 cStr = pChar; 103 104 // 注:CString 转换 char* 105 pChar = cStr.GetBuffer( cStr.GetLength() ); 106 107 // 注:CString 转换 char[] 108 strncpy( tagChar, (LPCTSTR)CString, sizeof(tagChar)); 109 110 // 注:CString 转换 wchar_t* 111 pWideChar = cStr.AllocSysString(); 112 printf( “%ls\n”, pWideChar ); 113 }
1》string转wstring
wstring s2ws(const string& s)
{
_bstr_t t = s.c_str();
wchar_t* pwchar = (wchar_t*)t;
wstring result = pwchar;
return result;
}
2》wstring转string
string ws2s(const wstring& ws)
{
_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++)
{
result+=str[i];
}
return result;
}
4》cstring转string
a)void ConvertCString2string(CString& strSrc,std::string& strDes)
{
#ifndef UNICODE
strDes = strSrc;
#else USES_CONVERSION;
strDes = W2A(strSrc.LockBuffer());
strSrc.UnlockBuffer();
#endif
}
b)
string s(CString.GetBuffer());
ReleaseBuffer();
GetBuffer()后一定要ReleaseBuffer(),否则就没有释放缓冲区所占的空间.
c)
string CStringToString(CString cstr) { string result(cstr.GetLength(),'e'); for (int i=0;i 5》string转char *a)char *p = string.c_str();举例: string aa("aaa"); char *c=aa.c_str(); string mngName; char t[200]; memset(t,0,200); strcpy(t,mngName.c_str());b)一个一个字符的赋值
char *p = new char[sring的长度+1];p[string的长度]='/0';但是要注意最后赋值'/0'!!!
char * StringToChar(string &str){int len=str.length();char * p= new char[len+1];for (int i=0;i {p[i]=str[i];}p[len]='/0';}6》char* 转stringstring s(char *); 你的只能初始化,在不是初始化的地方最好还是用assign();string CharToString(char*arr,int count) { string result(arr,4); return result; }string是ansi编码字符charTCHAR是unicode编码字符wchar_t7》string转TCHAR */* wBuf 申明为指针即可。 */ wchar_t *chr2wch(const char *buffer) { size_t len = strlen(buffer); size_t wlen = MultiByteToWideChar(CP_ACP, 0, (const char*)buffer, int(len), NULL, 0); wchar_t *wBuf = new wchar_t[wlen + 1]; MultiByteToWideChar(CP_ACP, 0, (const char*)buffer, int(len), wBuf, int(wlen)); return wBuf; }8》TCHAR *转stringchar * wch2chr(LPCTSTR lpString) { // Calculate unicode string length. UINT len = wcslen(lpString)*2; char *buf = (char *)malloc(len); UINT i = wcstombs(buf,lpString,len); return buf; }9》string 和char*转intstring 转 int .............................. char* 转 int #includeint atoi(const char *nptr); long atol(const char *nptr); long long atoll(const char *nptr); long long atoq(const char *nptr); 10》int转char*和string在stdlib.h中有个函数itoa() itoa的用法: itoa(i,num,10); i 需要转换成字符的数字 num 转换后保存字符的变量11》wstring转Cstingstd::wstring转CStringCString str( filename.c_str() );12》Cstring转wstringCString转std::wstringstd::wstring str = filename.GetString();13》Cstring转char *CString cstr(asdd);
const char* ch = (LPCTSTR)cstr;举例:CString str= "i am good ";
char* lp=str.GetBuffer(str.GetLength());str.ReleaseBuffer();14》char *转Cstring
举例:CString str;
char pStr[100];str.Format( "%s ",pStr);15》TCHar转char************************************************************************ 函数: THCAR2Char* 描述:将TCHAR* 转换为 char************************************************************************char* CPublic::THCAR2char(TCHAR* tchStr){int iLen = 2*wcslen(tchStr);//CString,TCHAR汉字算一个字符,因此不用普通计算长度char* chRtn = new char[iLen+1]wcstombs(chRtn,tchStr,iLen+1);//转换成功返回为非负值return chRtn;}16》char转tchar
定义了UNICODE宏之后,TCHAR就是宽字符wchar_t,否则TCHAR跟char是一样的^_
具体问题具体分析,浮云啊,一切皆是浮云.....以下摘录自网络:..............................................................《C++标准函数库》中说的有三个函数可以将字符串的内容转换为字符数组和C—string1.data(),返回没有”/0“的字符串数组2,c_str(),返回有”/0“的字符串数组3,copy().................................................................int 转 CString:CString.Format("%d",int);...............................string 转 CStringCString.format("%s", string.c_str());用c_str()确实比data()要好........................................char* 转 CStringCString.format("%s", char*);CString strtest;char * charpoint;charpoint="give string a value";strtest=charpoint; //直接付值...................................................................CString 转 intCString ss="1212.12";int temp=atoi(ss); //atoi _atoi64或atol将字符转换为整数,可以使用atoi、_atoi64或atol。int int_chage = atoi((lpcstr)ss) ;或:CString str = "23";UINT uint;sscanf(str, "%d", uint);..............................string 转 int..............................char* 转 int#include int atoi(const char *nptr);long atol(const char *nptr);long long atoll(const char *nptr);long long atoq(const char *nptr);...................................................................CString 转 stringstring s(CString.GetBuffer());GetBuffer()后一定要ReleaseBuffer(),否则就没有释放缓冲区所占的空间...........................................int 转 string..........................................char* 转 stringstring s(char *);你的只能初始化,在不是初始化的地方最好还是用assign()....................................................................CString 转 char *CString strtest="wwwwttttttt";charpoint=strtest.GetBuffer(strtest.GetLength());CString转换 char[100]char a[100];CString str("aaaaaa");strncpy(a,(LPCTSTR)str,sizeof(a));CString str="aaa";char* ch;ch=(char*)(LPCTSTR)str;..........................................int 转 char *在stdlib.h中有个函数itoa()itoa的用法:itoa(i,num,10);i 需要转换成字符的数字num 转换后保存字符的变量10 转换数字的基数(进制)10就是说按照10进制转换数字。还可以是2,8,16等等你喜欢的进制类型原形:char *itoa(int value, char* string, int radix);实例:#include "stdlib.h"#include "stdio.h"main(){int i=1234;char s[5];itoa(i,s,10);printf("%s",s);getchar();}..........................................string 转 char *char *p = string.c_str();string aa("aaa");char *c=aa.c_str();string mngName;char t[200];memset(t,0,200);strcpy(t,mngName.c_str());...................................................................标准C里没有string,char *==char []==string可以用CString.Format("%s",char *)这个方法来将char *转成CString。要把CString转成char *,用操作符(LPCSTR)CString就可以了。cannot convert from 'const char *' to 'char *'const char *c=aa.c_str();string.c_str()只能转换成const char *
#include// 使用CString必须使用MFC,并且不可包含#define _AFXDLL#includeusing namespace std;//———————————————————————————-//将 单字节char* 转换为 宽字节 wchar*inline wchar_t* AnsiToUnicode( const char* szStr ){int nLen = MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szStr, -1, NULL, 0 );if (nLen == 0){return NULL;}wchar_t* pResult = new wchar_t[nLen];MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szStr, -1, pResult, nLen );return pResult;}//———————————————————————————-// 将 宽字节wchar_t* 转换 单字节char*inline char* UnicodeToAnsi( const wchar_t* szStr ){int nLen = WideCharToMultiByte( CP_ACP, 0, szStr, -1, NULL, 0, NULL, NULL );if (nLen == 0){return NULL;}char* pResult = new char[nLen];WideCharToMultiByte( CP_ACP, 0, szStr, -1, pResult, nLen, NULL, NULL );return pResult;}//———————————————————————————-// 将单字符 string 转换为宽字符 wstringinline void Ascii2WideString( const std::string& szStr, std::wstring& wszStr ){int nLength = MultiByteToWideChar( CP_ACP, 0, szStr.c_str(), -1, NULL, NULL );wszStr.resize(nLength);LPWSTR lpwszStr = new wchar_t[nLength];MultiByteToWideChar( CP_ACP, 0, szStr.c_str(), -1, lpwszStr, nLength );wszStr = lpwszStr;delete [] lpwszStr;}//———————————————————————————-int _tmain(int argc, _TCHAR* argv[]){char* pChar = “我喜欢char”;wchar_t* pWideChar = L”我讨厌wchar_t”;wchar_t tagWideCharList[100] ;char ch = ‘A’;char tagChar[100] = {NULL};CString cStr;std::string str;
// 注:设置语言环境以便输出WideCharsetlocale(LC_ALL,”chs”);
// 注: char* 转换 wchar_t*// 注: wchar_t 未重载 << ,所以不可使用 cout << 输出pWideChar = AnsiToUnicode( pChar );// 注:printf(”%ls”) 和 wprintf(L”%s”) 一致printf( “%ls/n”, pWideChar );
// 注:wchar_t* 转换 wchar_t[]wcscpy ( tagWideCharList, pWideChar );wprintf( L”%s/n”, tagWideCharList );
// 注:wchar_t[] 转换 wchar_t*pWideChar = tagWideCharList;wprintf( L”%s/n”, pWideChar );
// 注:char 转换 stringstr.insert( str.begin(), ch );cout << str << endl;
// 注:wchar_t* 转换 stringpWideChar = new wchar_t[str.length()];swprintf( pWideChar, L”%s”, str.c_str());wprintf( L”%s/n”, pWideChar );
// 注:string 转换 char*pChar = const_cast(str.c_str()); cout << pChar << endl;
// 注:char* 转换 stringstr = std::string(pChar);// 注: cout 的 << 重载了string, 若printf 的话必须 printf(”%s”, str.c_str());// 而不可 print( “%s”, str ); 因为 str 是个 string 类cout << str << endl;
// 注:string 转换 char[]str = “无聊啊无聊”;strcpy( tagChar, str.c_str() );printf( “%s/n”, tagChar );
// 注:string 转换 CString;cStr = str.c_str();
// 注:CString 转换 stringstr = string(cStr.GetBuffer(cStr.GetLength()));
// 注:char* 转换 CStringcStr = pChar;
// 注:CString 转换 char*pChar = cStr.GetBuffer( cStr.GetLength() );
// 注:CString 转换 char[]strncpy( tagChar, (LPCTSTR)CString, sizeof(tagChar));
// 注:CString 转换 wchar_t*pWideChar = cStr.AllocSysString();printf( “%ls/n”, pWideChar );} 注:转自于: http://punch.blog.163.com/blog/static/2285731201132833915754/ http://blog.csdn.net/bingxuebage/article/details/5930260