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  • wchar_t char string wstring 之间的转换

    wchar_t char string wstring 之间的转换

    转:http://blog.csdn.net/lbd2008/article/details/8333583

    在处理中文时有时需要进行wchar_t,char,string,wstring之间的转换。

    其中char和string之间、wchar_t和wstring之间的转换较为简单,代码在vs2010下测试通过。

     
    #include <iostream>
    #include <string>
    #include <tchar.h>
    #include <Windows.h>
    
    using namespace std;
    
    //Converting&nbsp;a&nbsp;WChar&nbsp;string&nbsp;to&nbsp;a&nbsp;Ansi&nbsp;string
    char *w2c(char *pcstr,const wchar_t *pwstr, size_t len)
    {
        int nlength=wcslen(pwstr);
        //获取转换后的长度
        int nbytes = WideCharToMultiByte( 0, 0, pwstr, nlength, NULL,0,NULL, NULL ); 
        if(nbytes>len)   nbytes=len;
        // 通过以上得到的结果,转换unicode 字符为ascii 字符
        WideCharToMultiByte( 0,0, pwstr, nlength,   pcstr, nbytes, NULL,   NULL );
        return pcstr ;
    }
    
    int main(){
    
        setlocale(LC_ALL,"chs");
        char* cc = "this is a char 测试";
        wchar_t* wcc = L"this is a wchar 测试";
        string str("this is a string 测试 ");
        wstring wstr = L"this is a wstring 测试";
    
    
        //string to char
        const char* char_test = str.c_str(); 
        //cout<<"char_test:"<<char_test<<endl;
    
        //char to string
        string ss = cc;
        //cout<<"ss is :"<<ss<<endl;
    
        //wstring to wchar
        const wchar_t* wchar_test = wstr.c_str(); 
        //wcout<<wchar_test<<endl;
    
        //wchar to wstring
        wstring wss = wcc;
        wcout<<wcc<<endl;
    
        //char to wchar_t
        wchar_t *wc = new wchar_t[str.size()+1];
        //swprintf(wc,L"%S",cc); 
        //wcout<<cc<<endl;
        delete []wc;
        
        // wchar_t to char
        char *pcstr = (char *)malloc(sizeof(char)*(2 * wcslen(wcc)+1));
        memset(pcstr , 0 , 2 * wcslen(wcc)+1 );
        w2c(pcstr,wcc,2 * wcslen(wcc)+1) ;
        free(pcstr);
        
        system("pause");
        return 1;
    }
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  • 原文地址:https://www.cnblogs.com/Dageking/p/3520387.html
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