CString转string，char之间的转换

 CString转string

USES_CONVERSION;
CString cstr;
string str; 
str = W2A(cstr);

string 转 CString

string str;
CString str_num = (LPCTSTR)CA2T(str.c_str());

string转char[] ，char*

std::string str;
char *a=str.c_str();//后面补'\0'
char *b=str.data();  //不补

char[] char*转string

std::string str;
char *a;
str=a;