C++ char * char string 转换

1. string转const char*

#include <string.h>
string str = "abc";
const char* c_s = str.c_str();

2. const char*转string

#include <string.h>
const char* c_s = "abc";
string str(c_s);

3. string转char*

#include <string.h>
string str = "abc";
char* c;
const int len = str.length();
c = new char[len+1];
strcpy(c,str.c_str());

4. char*转string

#include <string.h>
char* c = "abc";
string str(c);

5. const char*转char*

#include <string.h>
const char* conch = "abc";
char* c = new char[100];//足够长
strcpy(c,conch);

6. char*转const char*

#include <string.h>
char* c = "abc";
const char* conch = c;