C++ char*，const char*，string的相互转换
C++ char*，const char*，string的相互转换1. string转const char*
string s ="abc";
constchar* c_s = s.c_str();
2. const char*转string
直接赋值即可
constchar* c_s ="abc";
string s(c_s);
3. string转char*
string s ="abc";
char* c;
constint len = s.length();
c =newchar;
strcpy(c,s.c_str());
4. char*转string
char* c ="abc";
string s(c);
5. const char*转char*
constchar* cpc ="abc";
char* pc =newchar;//足够长
strcpy(pc,c
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