Char *, const char * and string Conversion, charconst

[Conversion] char *, const char * and string Conversion, charconst

1. Convert string to const char *

String s = "abc ";

Const char * c_s = s. c_str ();

2. Convert const char * to string

Assign a value directly.

Const char * c_s = "abc ";

String s (c_s );

3. Convert string to char *

String s = "abc ";

Char * c;

Const int len = s. length ();

C = new char [len + 1];

Strcpy (c, s. c_str ());

4. Convert char * to string

Char * c = "abc ";

String s (c );

5. Convert const char * To char *

Const char * cpc = "abc ";

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

Strcpy (pc, cpc );

6. Convert char * to const char *

Assign a value directly.

Char * pc = "abc ";

Const char * cpc = pc;

 

Address: http://blog.sina.com.cn/s/blog_5436b2f40100pjzz.html

 

You can also study the conversion relationships between char * And wchar_t *, wstring, WCHAR, PSTR, LPSTR, PWSTR, LPWSTR, LPCSTR, LPTSTR, LPCTSTR, CString, and so on ......

2011-4-2 00:32

String to char * string str ("transfer ");
Char * ch = const_cast <char *> (str. c_str ())