String,const char*,char* between the transitions

1. String to const char*

string s = "abc";

Const char* c_s = S.c_str ();

2. Const char* Turn string

Directly assign the value can

Const char* c_s = "abc";

string s (c_s);

3. String Transfer char*

string s = "abc";

char* C;

const int len = S.length ();

c = new Char[len+1];

strcpy (C,s.c_str ());

4. char* Turn string

char* c = "abc";

string s (c);

5. Const char* Turn char*

Const char* CPC = "ABC";

char* pc = new char[100];//long enough

strcpy (PC,CPC);

6. char* to const char*

Directly assign the value can

char* PC = "ABC";

Const char* CPC = PC;

String,const char*,char* between the transitions