C++ char*，const char*，string的相互转换

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C++ char*，const char*，string的相互转换


9 W* g7 X, L0 N0 n( W/ i, @, q+ N1. string转const char*

6 g  m7 s; }5 P1 j  Rstring s ="abc";
) [4 N3 f# i- M# IconsTChar* c_s = s.c_str();
2. const char*转string
  d7 m. F6 s) ]2 A! ?) M- y% W+ Z   直接赋值即可

constchar* c_s ="abc";
string s(c_s);
7 K5 m5 {3 `6 ?( [( ~( P 3. string转char*
string s ="abc";
char* c;
constint len = s.length();
c =newchar[len+1];
$ o9 c- |/ @' \3 e( `. {1 jstrcpy(c,s.c_str());
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4. char*转string

% U. p; P$ u! e0 b# T* \char* c ="abc";
% \  b1 ~* w6 X% J7 istring s(c);
5. const char*转char*

constchar* cpc ="abc";
/ Y7 Y: @8 d- w2 n# v  mchar* pc =newchar[100];//足够长
strcpy(pc,c
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