【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[len+1];

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[100];//足够长

strcpy(pc,cpc）