Wchar_t char string wstring conversion
- 2020-04-02 01:42:14
- OfStack
Sometimes wchar_t, char, string, wstring conversion is required when dealing with Chinese.
Among them, the conversion between char and string, wchar_t and wstring is relatively simple, and the code passed the test under vs2010.
#include <iostream>
#include <string>
#include <tchar.h>
#include <Windows.h>
using namespace std;
//Converting a WChar string to a Ansi string
char *w2c(char *pcstr,const wchar_t *pwstr, size_t len)
{
int nlength=wcslen(pwstr);
//Gets the converted length
int nbytes = WideCharToMultiByte( 0, 0, pwstr, nlength, NULL,0,NULL, NULL );
if(nbytes>len) nbytes=len;
//With the results obtained above, convert unicode characters to ASCII characters
WideCharToMultiByte( 0,0, pwstr, nlength, pcstr, nbytes, NULL, NULL );
return pcstr ;
}
int main(){
setlocale(LC_ALL,"chs");
char* cc = "this is a char test ";
wchar_t* wcc = L"this is a wchar test ";
string str("this is a string test ");
wstring wstr = L"this is a wstring test ";
//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;
}