LInux下使用mbstowcs函数可以将char转化为wchar_t
函数含义:convert a multibyte string to a wide char string
说明: The behaviour of mbstowcs depends on theLC_CTYPE category of the current locale
返回值: The mbstowcs() function returns the number of wide characters that make up the converted part of the wide-char-acter string, not including the terminating null wide character. If an invalid multibyte sequence was encountered, (size_t) -1 is returned.
1 #include
2 #include
3 #include
4 #include
5 #include
6 #include
7 using namespacestd;
10 //将char类型转化为wchar13 //locale: 环境变量的值,mbstowcs依赖此值来判断src的编码方式
11 int ToWchar(char* &src, wchar_t* &dest, const char *locale = "zh_CN.utf8"){18 if (src ==NULL) {19 dest =NULL;20 return 0;21 }
23 //根据环境变量设置locale
24 setlocale(LC_CTYPE, locale);
26 //得到转化为需要的宽字符大小
27 int w_size = mbstowcs(NULL, src, 0) + 1;
29 //w_size=0说明mbstowcs返回值为-1。即在运行过程中遇到了非法字符(很有可能使locale没有设置正确)
31 if (w_size == 0) {32 dest =NULL;33 return -1;34 }
36 wcout << "w_size" << w_size <
42 int ret = mbstowcs(dest, src, strlen(src)+1);43 if (ret <= 0)return -1;46 return 0;47 }
49 intmain(){51 char* str = "中国123";52 wchar_t *w_str ;53 ToWchar(str,w_str);54 wcout << w_str[0] << "--" << w_str[1] << "--" << w_str[2];55 delete(w_str);56 return 0;57 }
1 #include
2
3 int main(void){5 inti_number, result;6 floatf_number;7 char c_number, str[81];8 wchar_t wc_str, ws_str[81];
10 printf( "\n\nEnter an int, a float, two chars and two strings\n");
12 result = scanf( "%d %f %c %C %s %S",
&i_number, &f_number, &c_number, &wc_str, str, ws_str );13 printf( "\nThe number of fields input is %d\n",
result );14 printf( "The contents are: %d %f %c %C %s %S\n",
i_number, f_number, c_number, wc_str, str, ws_str);
16 wprintf( L"\n\nEnter an int, a float, two chars and two strings\n");
18 result = wscanf( L"%d %f %hc %lc %S %ls",
&i_number, &f_number, &c_number, &wc_str, str, ws_str );19 wprintf( L"\nThe number of fields input is %d\n",
result );20 wprintf( L"The contents are: %d %f %C %c %hs %s\n",
i_number, f_number, c_number, wc_str, str, ws_str);21 }
原文:/wulangzhou/p/4538910.html