Thread: is there any way to write a float to a ch string

is there any way to write a float to a ch string such as

double me=254,1948;

i want to write this it to
char * temp=new char [200];

is there any way to do this?

sprintf() or stringstreams.

can you explain it in a more detailed way?

Your compiler not got helpfiles?
Forgotten what a search engine is?
Didnt you see the search button ?
Can you wipe your own ass or do you need nursmaiding for that too?

here...

sprintf, swprintf
Write formatted data to a string.

int sprintf( char *buffer, const char *format [, argument] ... );

int swprintf( wchar_t *buffer, const wchar_t *format [, argument] ... );

Routine Required Header Compatibility
sprintf <stdio.h> ANSI, Win 95, Win NT
swprintf <stdio.h> or <wchar.h> ANSI, Win 95, Win NT


For additional compatibility information, see Compatibility in the Introduction.

Libraries

LIBC.LIB Single thread static library, retail version
LIBCMT.LIB Multithread static library, retail version
MSVCRT.LIB Import library for MSVCRT.DLL, retail version


Return Value

sprintf returns the number of bytes stored in buffer, not counting the terminating null character. swprintf returns the number of wide characters stored in buffer, not counting the terminating null wide character.

Parameters

buffer

Storage location for output

format

Format-control string

argument

Optional arguments

For more information, see Format Specifications.

Remarks

The sprintf function formats and stores a series of characters and values in buffer. Each argument (if any) is converted and output according to the corresponding format specification in format. The format consists of ordinary characters and has the same form and function as the format argument for printf. A null character is appended after the last character written. If copying occurs between strings that overlap, the behavior is undefined.

swprintf is a wide-character version of sprintf; the pointer arguments to swprintf are wide-character strings. Detection of encoding errors in swprintf may differ from that in sprintf. swprintf and fwprintf behave identically except that swprintf writes output to a string rather than to a destination of type FILE.

Generic-Text Routine Mappings

TCHAR.H Routine _UNICODE & _MBCS Not Defined _MBCS Defined _UNICODE Defined
_stprintf sprintf sprintf swprintf


Example

/* SPRINTF.C: This program uses sprintf to format various
* data and place them in the string named buffer.
*/

#include <stdio.h>

void main( void )
{
char buffer[200], s[] = "computer", c = 'l';
int i = 35, j;
float fp = 1.7320534f;

/* Format and print various data: */
j = sprintf( buffer, "\tString: %s\n", s );
j += sprintf( buffer + j, "\tCharacter: %c\n", c );
j += sprintf( buffer + j, "\tInteger: %d\n", i );
j += sprintf( buffer + j, "\tReal: %f\n", fp );

printf( "Output:\n%s\ncharacter count = %d\n", buffer, j );
}


Output

Output:
String: computer
Character: l
Integer: 35
Real: 1.732053

character count = 71

and now look up istringstream and ostringstream to see a more c++ way of doing things.