Conversion between string, CString, char *

Conversion between string, CString, char *

Int to CString:
CString. Format ("% d", int );
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String to CString
CString. format ("% s", string. c_str ());
C_str () is indeed better than data.
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Char * To CString
CString. format ("% s", char *);
CString strtest;
Char * charpoint;
Charpoint = "give string a value ";
Strtest = charpoint; // pay the value directly
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CString to int
CString ss = "1212.12 ";
Int temp = atoi (ss); // atoi _ atoi64 or atol

Converts a character to an integer. You can use atoi, _ atoi64, or atol.
Int int_chage = atoi (lpcstr) ss );
Or:
CString str = "23 ";
UINT uint;
Sscanf (str, "% d", uint );
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String to int
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Char * to int
# Include <stdlib. h>

Int atoi (const char * nptr );
Long atol (const char * nptr );
Long atoll (const char * nptr );
Long atoq (const char * nptr );
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CString to string
String s (CString. GetBuffer ());
ReleaseBuffer () is required after GetBuffer (). Otherwise, no space occupied by the buffer is released.
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Int to string
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Char * to string
String s (char *);
You can only initialize it. It is best to use assign () unless it is initialized ().
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Convert CString to char *

Copy codeThe Code is as follows: CString strtest = "wwwwttttttt ";
Charpoint = strtest. GetBuffer (strtest. GetLength ());
CString conversion char [100]
Char a [100];
CString str ("aaaaaa ");
Strncpy (a, (LPCTSTR) str, sizeof ());
CString str = "aaa ";
Char * ch;
Ch = (char *) (LPCTSTR) str;

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Convert int to char *
There is a function itoa () in stdlib. h ()
Itoa usage:
Itoa (I, num, 10 );
I number to be converted to characters
Variable for saving characters After num Conversion
10: The base (in hexadecimal) 10 of the number to be converted. It can also be 2, 8, 16, and so on.
Prototype: char * itoa (int value, char * string, int radix );
Instance:Copy codeThe Code is as follows: # include "stdlib. h"
# Include "stdio. h"
Main ()
{
Int I = 1234;
Char s [5];
Itoa (I, s, 10 );
Printf ("% s", s );
Getchar ();
}

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String to char *
Copy codeThe Code is as follows: char * p = string. c_str ();

String aa ("aaa ");
Char * c = aa. c_str ();
String mngName;
Char t [200];
Memset (t, 0,200 );
Strcpy (t, mngName. c_str ());

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There is no string in Standard C, char * = char [] = string
You can use the CString. Format ("% s", char *) method to convert char * To CString. Convert CString to char *.
You can use the operator (LPCSTR) CString.
Cannot convert from 'const char * 'to 'Char *'
Const char * c = aa. c_str ();
String. c_str () can only be converted to const char *

CString header file # include <afx. h>
String header file # include <string. h>

Convert CString to char *

CString cstr;

Char * p = (LPSTR) (LPCTSTR) cstr;

String to CString
CString. format ("% s", string. c_str ());

Convert char to CString
CString. format ("% s", char *);

Char to string
String s (char *);

String to char *
Char * p = string. c_str ();

CString to string
String s (CString. GetBuffer ());

1, string-> CString
CString. format ("% s", string. c_str ());
C_str () is indeed better than data.
2, char-> string
String s (char *);
Only Initialization is allowed. It is best to use assign () instead of initialization ().
3, CString-> string
String s (CString. GetBuffer ());
ReleaseBuffer () is required after GetBuffer (). Otherwise, no space occupied by the buffer is released.

As mentioned in C ++ standard function library
There are three functions that can convert the content of a string to a character array and a C-string
1. data (), returns a string array without "/0"
2, c_str (), returns a string array with "/0"
3, copy ()

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Conversion between CString, int, char *, and char [100 --

Conversion between CString, int, char *, and char [100 --

CString mutual int Conversion

Converts a character to an integer. You can use atoi, _ atoi64, or atol.
To convert a number to a CString variable, you can use the Format function of CString. For example
CString s;
Int I = 64;
S. Format ("% d", I)
The Format function is very powerful and worth your research.

Void CStrDlg: OnButton1 ()
{
// TODO: Add your control notification handler code here
CString
Ss = "1212.12 ″;
Int temp = atoi (ss );
CString aa;
Aa. Format ("% d", temp );
AfxMessageBox ("var is" + aa );
}

Sart. Format ("% s", buf );

Convert CString to char *

/// Char * TO cstring
CString strtest;
Char * charpoint;
Charpoint = "give string a value ";
Strtest = charpoint;

/// Cstring TO char *

Convert CString to char *

CString cstr;

Char * p = (LPSTR) (LPCTSTR) cstr;

String to CString
CString. format ("% s", string. c_str ());

Convert char to CString
CString. format ("% s", char *);

Char to string
String s (char *);

String to char *
Char * p = string. c_str ();

CString to string
String s (CString. GetBuffer ());

1, string-> CString
CString. format ("% s", string. c_str ());
C_str () is indeed better than data.
2, char-> string
String s (char *);
Only Initialization is allowed. It is best to use assign () instead of initialization ().
3, CString-> string
String s (CString. GetBuffer ());
ReleaseBuffer () is required after GetBuffer (). Otherwise, no space occupied by the buffer is released.

As mentioned in C ++ standard function library
There are three functions that can convert the content of a string to a character array and a C-string
1. data (), returns a string array without "/0"
2, c_str (), returns a string array with "/0"
3, copy ()

―――――――――――――――――――――

Conversion between CString, int, char *, and char [100 --

Conversion between CString, int, char *, and char [100 --

CString mutual int Conversion

Converts a character to an integer. You can use atoi, _ atoi64, or atol.
To convert a number to a CString variable, you can use the Format function of CString. For example
CString s;
Int I = 64;
S. Format ("% d", I)
The Format function is very powerful and worth your research.

Void CStrDlg: OnButton1 ()
{
// TODO: Add your control notification handler code here
CString
Ss = "1212.12 ″;
Int temp = atoi (ss );
CString aa;
Aa. Format ("% d", temp );
AfxMessageBox ("var is" + aa );
}

Sart. Format ("% s", buf );

Convert CString to char *

/// Char * TO cstring
CString strtest;
Char * charpoint;
Charpoint = "give string a value ";
Strtest = charpoint;

/// Cstring TO char *
Charpoint = strtest. GetBuffer (strtest. GetLength ());

There is no string in Standard C, char * = char [] = string

You can use the CString. Format ("% s", char *) method to convert char * To CString. To convert CString to char *, use the operator (LPCSTR) CString.

CString conversion char [100]

Char a [100];
CString str ("aaaaaa ");
Strncpy (a, (LPCTSTR) str, sizeof ());

Charpoint = strtest. GetBuffer (strtest. GetLength ());

There is no string in Standard C, char * = char [] = string

You can use the CString. Format ("% s", char *) method to convert char * To CString. To convert CString to char *, use the operator (LPCSTR) CString.

CString conversion char [100]

Char a [100];
CString str ("aaaaaa ");
Strncpy (a, (LPCTSTR) str, sizeof ());