字符串与数值间的数据转换

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#include <wchar.h>

//-------------------------------------------------

字符串转浮点型

//-------------------------------------------------

double wcstod( const wchar_t * ptr,
               wchar_t ** endptr );

float wcstof( const wchar_t * ptr,
              wchar ** endptr );

long double wcstold( const wchar_t * ptr,
                     wchar ** endptr );

//-------------------------------------------------

字符串转整型

//-------------------------------------------------

int nY = _wtoi( m_wc );

//--------------------------------------------------

整形转字符串

//--------------------------------------------------

char *_itoa(
   int value,
   char *string,
   int radix
);

wchar_t * _itow(
   int value,
   wchar_t *string,
   int radix
);

//--------------------------------------------------

浮点数转字符串

//--------------------------------------------------

int swprintf(
   wchar_t *buffer,
   size_t count,
   const wchar_t *format [,
      argument]...
);

float x = 123.5;
wchar_t wszBuffer[20];

swprintf(wszBuffer, L"%f", x);

int main( void )
{
float fl;
WCHAR* m_wc=L"256";

fl = (float)wcstod(m_wc,NULL);

wcout << m_wc << endl;

}