VC中数字与字符串转换方法
字符串转数字
1CRT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
2.使用sscanf
3.Windows SDK<shlwapi.h>StrToInt
4.MFC/ATL
     CString::Format (此函数应该是用来将数字转成字符,MSDN中有解释)
数字转字符串
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
cstring转为int_ecvt_s
_fcvt_s
2.使用sprintf
3.<strsafe.h>StringCbPrintf
 

 
通用相互转换方法
1.C++流方式:
stringstream 
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, _i64toa, _ui64toa, _itow, _i64tow, _ui64tow,_itoa_s, _i64toa_s, _ui64toa_s, _itow_s, _i64tow_s, _ui64tow_s
Convert int or __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 longinteger
_ultoa, _ultow, _ultoa_s, _ultow_s
Convert unsigned long to string
atof, _atof_l, _wtof, _wtof_l
Convert wide-character string to adouble
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 

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