Conversion between char *, Int, and cstring

1. Convert from char * to int

 

Char * Ch;

Int num;

Num = atoi (CH );

The details are as follows:

# Include <stdlib. h>
Int atoi (const char * nptr );
Long atol (const char * nptr );
Long long Atoll (const char * nptr );
Long long atoq (const char * nptr );

 

2. cstring mutual int Conversion

 

① Cstring to int
Converts a character to an integer. You can use atoi, _ atoi64, or atol.

② Int to cstring
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.

 

3. Convert cstring to char *

 

① Char * To cstring
Cstring strtest;
Char * charpoint;
Charpoint = "give string a value ";
Strtest = charpoint;
② Cstring to char *
Charpoint = strtest. getbuffer (strtest. getlength ());

Or

Direct (lpcstr) strtest