C++ char*，const char*，string的相互转换

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C++ char*，const char*，string的相互转换


. s" B7 ~0 d- l& V1 @$ f1. string转const char*
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string s ="abc";
# j7 b6 w# F& v4 M. GconsTChar* c_s = s.c_str();
- L* @- \" E: h" `2. const char*转string
   直接赋值即可

constchar* c_s ="abc";
string s(c_s);
6 `, C! I+ C9 ^6 Z# G0 ^* X 3. string转char*
5 ~( L  ^- q5 r# s" Y; A" Tstring s ="abc";
char* c;
% L  ?% d% h) g8 w" zconstint len = s.length();
c =newchar[len+1];
; a, ]( Q3 Z7 f- Nstrcpy(c,s.c_str());
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, W. z' J. W$ o9 E* P9 m 4. char*转string
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char* c ="abc";
4 C" A  U2 y( u5 q# @) _( Hstring s(c);
6 j) k. z5 H  [! a% f% n 5. const char*转char*

! E& E# {, c. E4 {constchar* cpc ="abc";
) h, \; F" R! ]/ K4 v1 l, w  Zchar* pc =newchar[100];//足够长
' `/ C  L( I8 F, H" Wstrcpy(pc,c

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