C++ char*，const char*，string的相互转换

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C++ char*，const char*，string的相互转换
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! Y- g4 ^: s2 E+ `( y, d1. string转const char*

2 g5 V6 [0 _6 v2 B$ W' Rstring s ="abc";
consTChar* c_s = s.c_str();
6 z8 ]' M' Z; ^* L2. const char*转string
  Y+ Y% @$ g" R9 b8 P   直接赋值即可

constchar* c_s ="abc";
string s(c_s);
3. string转char*
string s ="abc";
char* c;
9 F$ P" @" P6 r2 W* t& x; cconstint len = s.length();
c =newchar[len+1];
strcpy(c,s.c_str());
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: n' h: {' z* G8 y6 B 4. char*转string

char* c ="abc";
$ H( U# y0 Z+ [; c- Sstring s(c);
5. const char*转char*

constchar* cpc ="abc";
char* pc =newchar[100];//足够长
strcpy(pc,c
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