VC中数字与字符串转换方法

VC中数字与字符串转换方法
u 字符串转数字

l 1．CRT函数

	ASCII	UNICODE	TCHAR	VS2005
int	atoi	_wtoi	_tstoi,_ttoi	_atoi_l,_wtoi_l
long	atol	_wtol	_tstoi,_ttoi	_atoi_l,_wtoi_l
__int64	_atoi64	_wtoi64	_tstoi64,_ttoi64	_atoi64_l,_wtoi64_l
float				_atoflt,_atoflt_l
double	atof	_wtof	_tstof,_ttof	_atof_l,_wtof_l,_atodbl,_atodbl_l
long double				_atoldbl,_atoldbl_l

l 2.使用sscanf

l 3.Windows SDK：<shlwapi.h>：StrToInt

l 4.MFC/ATL：CString::Format

u 数字转字符串
l 1．CRT函数

	ASCII	UNICODE	TCHAR	VS2005
int	Itoa,_itoa	_itow	_itot
long	Ltoa,_ltoa	_ltow	_ltot
__int64	_i64toa	_i64tow	_i64tot
double	Gcvt,_gcvt,_ecvt,_fcvt	_wtof	_tstof,ttof	_gcvt_s,_ecvt_s,_fcvt_s

l 2.使用sprintf

l 3.<strsafe.h>：StringCbPrintf

u 通用相互转换方法
l C++流方式：stringstream

l 2.boost库：boost:: lexical_cast
摘自MSDN：Data-Conversion Routines

Routine	Use
atof, _atof_l, _wtof, _wtof_l	Convert string to float
atoi, _atoi_l, _wtoi, _wtoi_l	Convert string to int
_atoi64, _atoi64_l, _wtoi64, _wtoi64_l	Convert string to __int64
atol, _atol_l, _wtol, _wtol_l	Convert string to long
_ecvt, _ecvt_s	Convert double to string of specified length
_fcvt, _fcvt_s	Convert double to string with specified number of digits following decimal point
_gcvt, _gcvt_s	Convert double number to string; store string in buffer
_itoa, _itow, _itoa_s, _itow_s, _i64tow_s	Convert int to string
_i64toa, _ui64toa, _i64tow, _ui64tow, _i64toa_s, _ui64toa_s, _ui64tow_s	Convert __int64 to string
_ltoa, _ltow, _ltoa_s, _ltow_s	Convert long to string
strtod, _strtod_l, wcstod, _wcstod_l	Convert string to double
strtol, wcstol, _strtol_l, _wcstol_l	Convert string to long integer
strtoul, _strtoul_l, wcstoul, _wcstoul_l	Convert string to unsigned long integer
_ultoa, _ultow, _ultoa_s, _ultow_s	Convert unsigned long to string
atof, _atof_l, _wtof, _wtof_l	Convert wide-character string to a double
atoi, _atoi_l, _wtoi, _wtoi_l	Convert wide-character string to int
_atoi64, _atoi64_l, _wtoi64, _wtoi64_l	Convert wide-character string to __int64
atol, _atol_l, _wtol, _wtol_l	Convert wide-character string to long

原帖:http://www.cppblog.com/tbyxyz/articles/str2num.html